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s/scroll/scrollbar/ and improve scrollbar widget comments.

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svn path=/trunk/netsurf/; revision=12363
This commit is contained in:
Michael Drake 2011-05-09 22:49:17 +00:00
parent 5c95b32756
commit ac447fc293
16 changed files with 1082 additions and 1050 deletions
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2
Makefile.sources
View File

@ -20,7 +20,7 @@ S_UTILS := base64.c filename.c hashtable.c http.c locale.c messages.c \
S_DESKTOP := cookies.c history_global_core.c hotlist.c knockout.c \
mouse.c options.c plot_style.c print.c search.c searchweb.c \
scroll.c sslcert.c textarea.c thumbnail.c tree.c \
scrollbar.c sslcert.c textarea.c thumbnail.c tree.c \
tree_url_node.c version.c
# S_COMMON are sources common to all builds

8
desktop/browser.c
View File

@ -539,7 +539,7 @@ nserror browser_window_callback(hlcache_handle *c,
browser_window_remove_caret(bw);
bw->scroll = NULL;
bw->scrollbar = NULL;
gui_window_new_content(bw->window);
@ -618,7 +618,7 @@ nserror browser_window_callback(hlcache_handle *c,
else if (c == bw->current_content) {
bw->current_content = NULL;
browser_window_remove_caret(bw);
bw->scroll = NULL;
bw->scrollbar = NULL;
selection_init(bw->sel, NULL);
}
@ -1509,8 +1509,8 @@ void browser_window_mouse_drag_end(struct browser_window *bw,
return;
}
if (bw->scroll != NULL) {
html_overflow_scroll_drag_end(bw->scroll, mouse, x, y);
if (bw->scrollbar != NULL) {
html_overflow_scroll_drag_end(bw->scrollbar, mouse, x, y);
return;
}

4
desktop/browser.h
View File

@ -111,7 +111,7 @@ struct browser_window {
/** Scroll capturing all mouse events, updated to any active HTML
* scrollbar, or NULL when no scrollbar drags active */
struct scroll *scroll;
struct scrollbar *scrollbar;
/** Current fetch is download */
bool download;
@ -184,7 +184,7 @@ struct browser_window {
int status_miss; /**< Number of times status was really updated. */
};
struct browser_scroll_data {
struct browser_scrollbar_data {
struct browser_window *bw;
struct box *box;
};

805
desktop/scroll.c
View File

@ -1,805 +0,0 @@
/*
* Copyright 2004-2008 James Bursa <bursa@users.sourceforge.net>
* Copyright 2008 Michael Drake <tlsa@netsurf-browser.org>
* Copyright 2009 Paul Blokus <paul_pl@users.sourceforge.net>
*
* This file is part of NetSurf, http://www.netsurf-browser.org/
*
* NetSurf is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* NetSurf is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/** \file
* Scroll widget (implementation).
*/
#include <stdbool.h>
#include <stdlib.h>
#include "desktop/mouse.h"
#include "desktop/scroll.h"
#include "desktop/plotters.h"
#include "desktop/plot_style.h"
#include "utils/log.h"
#include "utils/messages.h"
#include "utils/utils.h"
struct scroll {
bool horizontal; /* Horizontal scroll if true, vertical if false
*/
int length; /* Length of the scroll widget */
int scrolled_d; /* The dimension of the scrolled area */
int scrolled_vis; /* The visible part of the scrolled area */
int area_scroll; /* Scroll value of the scrolled area */
int bar_off; /* Offset of the scrollbar */
int bar_len; /* Length of the scrollbar */
scroll_client_callback client_callback; /* Callback receiving scroll
events */
void *client_data; /* User data passed to the callback */
bool dragging; /* Flag indicating drag at progess */
int drag_start_coord; /* Coordinate value at drag start */
int drag_start_bar_off; /* Scrollbar offset at drag start */
bool reverse; /* Flag indicating that the scroll should move
* in the opposite direction than the mouse does
*/
struct scroll *pair; /* Parpendicular scroll */
bool pair_drag; /* Flag indicating that the current drag affects
also the pair scroll */
};
/** Overflow scrollbar colours
*
* Overflow scrollbar colours can be set by front end code to try to match
* scrollbar colours used on the desktop.
*
* If a front end doesn't set scrollbar colours, these defaults are used.
*/
colour scroll_widget_fg_colour = 0x00d9d9d9; /* light grey */
colour scroll_widget_bg_colour = 0x006b6b6b; /* mid grey */
colour scroll_widget_arrow_colour = 0x00444444; /* dark grey */
/**
* Create a scroll.
*
* \param horizontal true for a horizontal scrollbar false for a
* vertical one
* \param length full length of the scroll widget
* \param scrolled_dimension full length of the scrolled area
* \param scrolled_visible length of the visible part of the scrolled area
* \param client_data data for the client callback
* \param client_callback client callback for scroll events
* \param scroll_pt gets updated to point at the newly created
* scroll
* \return true if the scroll has been created succesfully
* or false on memory exhaustion
*/
bool scroll_create(bool horizontal, int length,
int scrolled_dimension, int scrolled_visible,
void *client_data, scroll_client_callback client_callback,
struct scroll **scroll_pt)
{
struct scroll *scroll;
int well_length;
scroll = malloc(sizeof(struct scroll));
if (scroll == NULL) {
LOG(("malloc failed"));
warn_user("NoMemory", 0);
*scroll_pt = NULL;
return false;
}
scroll->horizontal = horizontal;
scroll->length = length;
scroll->scrolled_d = scrolled_dimension;
scroll->scrolled_vis = scrolled_visible;
scroll->area_scroll = 0;
scroll->bar_off = 0;
scroll->reverse = false;
scroll->pair = NULL;
scroll->pair_drag = false;
well_length = length - 2 * SCROLLBAR_WIDTH;
scroll->bar_len = (well_length * scrolled_visible) / scrolled_dimension;
scroll->client_callback = client_callback;
scroll->client_data = client_data;
scroll->dragging = false;
*scroll_pt = scroll;
return true;
}
/**
* Destroy a scroll.
*
* \param scroll the scroll to be destroyed
*/
void scroll_destroy(struct scroll *scroll)
{
if (scroll->pair != NULL)
scroll->pair->pair = NULL;
free(scroll);
}
/**
* Draw an outline rectangle common to a few of scroll elements.
*
* \param x0 left border of the outline
* \param y0 top border of the outline
* \param x1 right border of the outline
* \param y1 bottom border of the outline
* \param c base colour of the outline, the other colours are created by
* lightening or darkening this one
* \param inset true for inset outline, false for an outset one
* \return
*/
static inline bool scroll_redraw_scrollbar_rectangle(
int x0, int y0, int x1, int y1, colour c, bool inset)
{
static plot_style_t c0 = {
.stroke_type = PLOT_OP_TYPE_SOLID,
.stroke_width = 1,
};
static plot_style_t c1 = {
.stroke_type = PLOT_OP_TYPE_SOLID,
.stroke_width = 1,
};
static plot_style_t c2 = {
.stroke_type = PLOT_OP_TYPE_SOLID,
.stroke_width = 1,
};
if (inset) {
c0.stroke_colour = darken_colour(c);
c1.stroke_colour = lighten_colour(c);
} else {
c0.stroke_colour = lighten_colour(c);
c1.stroke_colour = darken_colour(c);
}
c2.stroke_colour = blend_colour(c0.stroke_colour, c1.stroke_colour);
if (!plot.line(x0, y0, x1, y0, &c0)) return false;
if (!plot.line(x1, y0, x1, y1 + 1, &c1)) return false;
if (!plot.line(x1, y0, x1, y0 + 1, &c2)) return false;
if (!plot.line(x1, y1, x0, y1, &c1)) return false;
if (!plot.line(x0, y1, x0, y0, &c0)) return false;
if (!plot.line(x0, y1, x0, y1 + 1, &c2)) return false;
return true;
}
/**
* Redraw a part of the scroll.
*
* \param scroll the scroll to be redrawn
* \param x the X coordinate to draw the scroll at
* \param y the Y coordinate to draw the scroll at
* \param clip the clipping rectangle
* \param scale scale for the redraw
* \return true on succes false otherwise
*/
bool scroll_redraw(struct scroll *scroll, int x, int y,
const struct rect *clip, float scale)
{
int w = SCROLLBAR_WIDTH;
int well_length, bar_off, bar_c0, bar_c1;
int v[6]; /* array of triangle vertices */
int x0, y0, x1, y1;
plot_style_t pstyle_scroll_widget_bg_colour = {
.fill_type = PLOT_OP_TYPE_SOLID,
.fill_colour = scroll_widget_bg_colour,
};
plot_style_t pstyle_scroll_widget_fg_colour = {
.fill_type = PLOT_OP_TYPE_SOLID,
.fill_colour = scroll_widget_fg_colour,
};
plot_style_t pstyle_scroll_widget_arrow_colour = {
.fill_type = PLOT_OP_TYPE_SOLID,
.fill_colour = scroll_widget_arrow_colour,
};
well_length = scroll->length - 2 * SCROLLBAR_WIDTH;
x0 = x;
y0 = y;
x1 = x + (scroll->horizontal ?
scroll->length : SCROLLBAR_WIDTH) - 1;
y1 = y + (scroll->horizontal ? SCROLLBAR_WIDTH : scroll->length) - 1;
bar_off = scroll->bar_off;
bar_c1 = (scroll->horizontal ? x0 : y0) + SCROLLBAR_WIDTH +
scroll->bar_off + scroll->bar_len - 1;
if (scale != 1.0) {
w *= scale;
well_length *= scale;
x0 *= scale;
y0 *= scale;
x1 *= scale;
y1 *= scale;
bar_off *= scale;
bar_c1 *= scale;
}
bar_c0 = (scroll->horizontal ? x0 : y0) + w + bar_off;
if (x1 < clip->x0 || y1 < clip->y0 || clip->x1 < x0 || clip->y1 < y0)
/* scrollbar is outside the clipping rectangle, nothing to
* render */
return true;
if (scroll->horizontal) {
/* scroll is horizontal */
/* scrollbar outline */
if (!scroll_redraw_scrollbar_rectangle(x0, y0, x1, y1,
scroll_widget_bg_colour, true))
return false;
/* left arrow icon border */
if (!scroll_redraw_scrollbar_rectangle(x0 + 1,
y0 + 1,
x0 + w - 2,
y1 - 1,
scroll_widget_fg_colour, false))
return false;
/* left arrow icon background */
if (!plot.rectangle(x0 + 2,
y0 + 2,
x0 + w - 2,
y1 - 1,
&pstyle_scroll_widget_fg_colour))
return false;
/* left arrow */
v[0] = x0 + w / 4;
v[1] = y0 + w / 2;
v[2] = x0 + w * 3 / 4;
v[3] = y0 + w / 4;
v[4] = x0 + w * 3 / 4;
v[5] = y0 + w * 3 / 4;
if (!plot.polygon(v, 3, &pstyle_scroll_widget_arrow_colour))
return false;
/* scroll well background */
if (!plot.rectangle(x0 + w - 1,
y0 + 1,
x1 - w + 2,
y1,
&pstyle_scroll_widget_bg_colour))
return false;
/* scroll position indicator bar */
if (!scroll_redraw_scrollbar_rectangle(bar_c0,
y0 + 1,
bar_c1,
y1 - 1,
scroll_widget_fg_colour, false))
return false;
if (!plot.rectangle(bar_c0 + 1,
y0 + 2,
bar_c1,
y1 - 1,
&pstyle_scroll_widget_fg_colour))
return false;
/* right arrow icon border */
if (!scroll_redraw_scrollbar_rectangle(x1 - w + 2,
y0 + 1,
x1 - 1,
y1 - 1,
scroll_widget_fg_colour, false))
return false;
/* right arrow icon background */
if (!plot.rectangle(x1 - w + 3,
y0 + 2,
x1 - 1,
y1 - 1,
&pstyle_scroll_widget_fg_colour))
return false;
/* right arrow */
v[0] = x1 - w / 4 + 1;
v[1] = y0 + w / 2;
v[2] = x1 - w * 3 / 4 + 1;
v[3] = y0 + w / 4;
v[4] = x1 - w * 3 / 4 + 1;
v[5] = y0 + w * 3 / 4;
if (!plot.polygon(v, 3, &pstyle_scroll_widget_arrow_colour))
return false;
} else {
/* scroll is vertical */
/* outline */
if (!scroll_redraw_scrollbar_rectangle(x0, y0, x1, y1,
scroll_widget_bg_colour,
true))
return false;
/* top arrow background */
if (!scroll_redraw_scrollbar_rectangle(x0 + 1,
y0 + 1,
x1 - 1,
y0 + w - 2,
scroll_widget_fg_colour,
false))
return false;
if (!plot.rectangle(x0 + 2,
y0 + 2,
x1 - 1,
y0 + w - 2,
&pstyle_scroll_widget_fg_colour))
return false;
/* up arrow */
v[0] = x0 + w / 2;
v[1] = y0 + w / 4;
v[2] = x0 + w / 4;
v[3] = y0 + w * 3 / 4;
v[4] = x0 + w * 3 / 4;
v[5] = y0 + w * 3 / 4;
if (!plot.polygon(v, 3, &pstyle_scroll_widget_arrow_colour))
return false;
/* scroll well background */
if (!plot.rectangle(x0 + 1,
y0 + w - 1,
x1,
y1 - w + 2,
&pstyle_scroll_widget_bg_colour))
return false;
/* scroll position indicator bar */
if (!scroll_redraw_scrollbar_rectangle(x0 + 1,
bar_c0,
x1 - 1,
bar_c1,
scroll_widget_fg_colour, false))
return false;
if (!plot.rectangle(x0 + 2,
bar_c0 + 1,
x1 - 1,
bar_c1,
&pstyle_scroll_widget_fg_colour))
return false;
/* bottom arrow background */
if (!scroll_redraw_scrollbar_rectangle(x0 + 1,
y1 - w + 2,
x1 - 1,
y1 - 1,
scroll_widget_fg_colour, false))
return false;
if (!plot.rectangle(x0 + 2,
y1 - w + 3,
x1 - 1,
y1 - 1,
&pstyle_scroll_widget_fg_colour))
return false;
/* down arrow */
v[0] = x0 + w / 2;
v[1] = y1 - w / 4 + 1;
v[2] = x0 + w / 4;
v[3] = y1 - w * 3 / 4 + 1;
v[4] = x0 + w * 3 / 4;
v[5] = y1 - w * 3 / 4 + 1;
if (!plot.polygon(v, 3, &pstyle_scroll_widget_arrow_colour))
return false;
}
return true;
}
/**
* Set the value of the scroll.
*
* \param scroll the scroll to have the value set
* \param scroll_val the new value to be set
* \param bar true if the value is for the scroll indication bar
* offset, false if it is for the scrolled area one
*/
void scroll_set(struct scroll *scroll, int scroll_val, bool bar)
{
int well_length;
struct scroll_msg_data msg;
if (scroll_val < 0)
scroll_val = 0;
if (scroll->scrolled_d == scroll->scrolled_vis)
return;
well_length = scroll->length - 2 * SCROLLBAR_WIDTH;
if (bar) {
if (scroll_val > well_length - scroll->bar_len)
scroll->bar_off = well_length - scroll->bar_len;
else
scroll->bar_off = scroll_val;
scroll->area_scroll = ((scroll->scrolled_d -
scroll->scrolled_vis) * (scroll->bar_off)) /
(well_length - scroll->bar_len);
} else {
if (scroll_val > scroll->scrolled_d - scroll->scrolled_vis)
scroll->area_scroll = scroll->scrolled_d -
scroll->scrolled_vis;
else
scroll->area_scroll = scroll_val;
scroll->bar_off = (well_length * scroll->area_scroll) /
scroll->scrolled_d;
}
msg.scroll = scroll;
msg.msg = SCROLL_MSG_MOVED;
msg.new_scroll = scroll->area_scroll;
scroll->client_callback(scroll->client_data, &msg);
msg.msg = SCROLL_MSG_REDRAW;
msg.x0 = scroll->horizontal ? SCROLLBAR_WIDTH - 1: 0;
msg.y0 = scroll->horizontal ? 0 : SCROLLBAR_WIDTH - 1;
msg.x1 = (scroll->horizontal ?
scroll->length - SCROLLBAR_WIDTH + 1: SCROLLBAR_WIDTH);
msg.y1 = (scroll->horizontal ?
SCROLLBAR_WIDTH : scroll->length - SCROLLBAR_WIDTH + 1);
scroll->client_callback(scroll->client_data, &msg);
}
/**
* Get the scroll offset for the visible part of the scrolled area.
*
* \param scroll the scroll to get the value from
* \return scroll offset for the scrolled area
*/
int scroll_get_offset(struct scroll *scroll)
{
if (scroll == NULL)
return 0;
return scroll->area_scroll;
}
/**
* Set the length of the scroll and the visible or scrolled part of the scrolled
* area.
*
* \param scroll the scroll to set the values for
* \param length -1 or the new scroll length to be set
* \param scrolled_visible -1 or the new value of the visible part of the
* scrolled area to be set
* \param scrolled_dimension -1 or the new dimension of the scrolled content
*/
void scroll_set_extents(struct scroll *scroll, int length,
int scrolled_visible, int scrolled_dimension)
{
int well_length;
if (length != -1)
scroll->length = length;
if (scrolled_visible != -1)
scroll->scrolled_vis = scrolled_visible;
if (scrolled_dimension != -1)
scroll->scrolled_d = scrolled_dimension;
well_length = length - 2 * SCROLLBAR_WIDTH;
scroll->bar_len = (well_length * scrolled_visible) /
scroll->scrolled_d;
scroll->bar_off = (well_length * scroll->area_scroll) /
scroll->scrolled_d;
}
/**
* Check the orientation of the scroll.
*
* \param scroll the scroll to check the orientation of
* \return true for a horizontal scroll, false for a vertical one
*/
bool scroll_is_horizontal(struct scroll *scroll)
{
return scroll->horizontal;
}
/**
* Internal procedure used for staring a drag scroll for a scrollbar.
*
* \param scroll the scroll to start the drag for
* \param x the X coordinate of the drag start
* \param y the Y coordinate of the drag start
* \param reverse whether this should be a reverse drag(used when the user
* drags the content and the scrolls have to adjust)
* \param pair whether the drag should start for the pair scroll too
*/
static void scroll_drag_start_internal(struct scroll *scroll, int x, int y,
bool reverse, bool pair)
{
struct scroll_msg_data msg;
scroll->drag_start_coord = scroll->horizontal ? x : y;
scroll->drag_start_bar_off = scroll->bar_off;
scroll->dragging = true;
scroll->reverse = reverse;
msg.scroll = scroll;
/* \todo - some proper numbers please! */
if (scroll->horizontal) {
msg.x0 = -1024;
msg.x1 = 1024;
msg.y0 = 0;
msg.y1 = 0;
} else {
msg.x0 = 0;
msg.x1 = 0;
msg.y0 = -1024;
msg.y1 = 1024;
}
if (pair && scroll->pair != NULL) {
scroll->pair_drag = true;
scroll->pair->drag_start_coord =
scroll->pair->horizontal ? x : y;
scroll->pair->drag_start_bar_off = scroll->pair->bar_off;
scroll->pair->dragging = true;
scroll->pair->reverse = reverse;
if (scroll->pair->horizontal) {
msg.x0 = -1024;
msg.x1 = 1024;
} else {
msg.y0 = -1024;
msg.y1 = 1024;
}
}
msg.msg = SCROLL_MSG_SCROLL_START;
scroll->client_callback(scroll->client_data, &msg);
}
/**
* Handle mouse actions other then drag ends.
*
* \param scroll the scroll which gets the mouse action
* \param mouse mouse state
* \param x X coordinate of the mouse
* \param y Y coordinate of the mouse
* \return message for the status bar or NULL on failure
*/
const char *scroll_mouse_action(struct scroll *scroll,
browser_mouse_state mouse, int x, int y)
{
int x0, y0, x1, y1;
int val;
const char *status;
bool h;
/* we want mouse presses and mouse drags that were not started at
* the scroll indication bar to be launching actions on the scroll area
*/
bool but1 = ((mouse & BROWSER_MOUSE_PRESS_1) ||
((mouse & BROWSER_MOUSE_HOLDING_1) &&
(mouse & BROWSER_MOUSE_DRAG_ON) &&
!scroll->dragging));
bool but2 = ((mouse & BROWSER_MOUSE_PRESS_2) ||
((mouse & BROWSER_MOUSE_HOLDING_2) &&
(mouse & BROWSER_MOUSE_DRAG_ON) &&
!scroll->dragging));
h = scroll->horizontal;
x0 = 0;
y0 = 0;
x1 = h ? scroll->length : SCROLLBAR_WIDTH;
y1 = h ? SCROLLBAR_WIDTH : scroll->length;
if (!scroll->dragging && !(x >= x0 && x <= x1 && y >= y0 && y <= y1)) {
/* Not a drag and mouse outside scroll widget */
return NULL;
}
if (h)
val = x;
else
val = y;
if (scroll->dragging) {
val -= scroll->drag_start_coord;
if (scroll->reverse)
val = -val;
if (val != 0)
scroll_set(scroll, scroll->drag_start_bar_off + val,
true);
if (scroll->pair_drag) {
scroll_mouse_action(scroll->pair, mouse, x, y);
status = messages_get("ScrollBoth");
} else
status = messages_get(h ? "ScrollH" : "ScrollV");
return status;
}
if (val < SCROLLBAR_WIDTH) {
/* left/up arrow */
status = messages_get(h ? "ScrollLeft" : "ScrollUp");
if (but1)
scroll_set(scroll, scroll->bar_off - SCROLLBAR_WIDTH,
true);
else if (but2)
scroll_set(scroll, scroll->bar_off + SCROLLBAR_WIDTH,
true);
} else if (val < SCROLLBAR_WIDTH + scroll->bar_off) {
/* well between left/up arrow and bar */
status = messages_get(h ? "ScrollPLeft" : "ScrollPUp");
if (but1)
scroll_set(scroll, scroll->area_scroll - scroll->length,
false);
else if (but2)
scroll_set(scroll, scroll->area_scroll + scroll->length,
false);
} else if (val > scroll->length - SCROLLBAR_WIDTH) {
/* right/down arrow */
status = messages_get(h ? "ScrollRight" : "ScrollDown");
if (but1)
scroll_set(scroll, scroll->bar_off + SCROLLBAR_WIDTH,
true);
else if (but2)
scroll_set(scroll, scroll->bar_off - SCROLLBAR_WIDTH,
true);
} else if (val > SCROLLBAR_WIDTH + scroll->bar_off + scroll->bar_len) {
/* well between right/down arrow and bar */
status = messages_get(h ? "ScrollPRight" : "ScrollPDown");
if (but1)
scroll_set(scroll, scroll->area_scroll + scroll->length,
false);
else if (but2)
scroll_set(scroll, scroll->area_scroll - scroll->length,
false);
}
else {
/* scroll indication bar */
status = messages_get(h ? "ScrollH" : "ScrollV");
}
if (mouse & (BROWSER_MOUSE_DRAG_1 | BROWSER_MOUSE_DRAG_2) &&
(val >= SCROLLBAR_WIDTH + scroll->bar_off
&& val < SCROLLBAR_WIDTH + scroll->bar_off +
scroll->bar_len))
/* The mouse event is a drag start and takes place at the scroll
* indication bar.
*/
scroll_drag_start_internal(scroll, x, y, false,
(mouse & BROWSER_MOUSE_DRAG_2) ?
true : false);
return status;
}
/**
* Handle end of mouse drags.
*
* \param scroll the scroll for which the drag ends
* \param mouse mouse state
* \param x X coordinate of the mouse
* \param y Y coordinate of the mouse
*/
void scroll_mouse_drag_end(struct scroll *scroll, browser_mouse_state mouse,
int x, int y)
{
struct scroll_msg_data msg;
int val;
assert(scroll->dragging);
val = (scroll->horizontal ? x : y) - scroll->drag_start_coord;
if (scroll->reverse)
val = -val;
if (val != 0)
scroll_set(scroll, scroll->drag_start_bar_off + val, true);
scroll->dragging = false;
scroll->reverse = false;
if (scroll->pair_drag) {
scroll->pair_drag = false;
val = (scroll->pair->horizontal ? x : y) -
scroll->pair->drag_start_coord;
if (scroll->pair->reverse)
val = -val;
if (val != 0)
scroll_set(scroll->pair,
scroll->pair->drag_start_bar_off + val,
true);
scroll->pair->dragging = false;
scroll->pair->reverse = false;
}
msg.scroll = scroll;
msg.msg = SCROLL_MSG_SCROLL_FINISHED;
scroll->client_callback(scroll->client_data, &msg);
}
/**
* Called when the content, which is scrolled with some scrolls, is being
* dragged so the scrolls have to adjust properly. If the content has both
* scrolls and scroll_make_pair has beed called before only the one scroll which
* will receive further mouse events has to be passed.
*
* \param scroll one of the the scrolls owned by the dragged content
* \param x X coordinate of mouse during drag start
* \param y Y coordinate of mouse during drag start
*/
void scroll_start_content_drag(struct scroll *scroll, int x, int y)
{
scroll_drag_start_internal(scroll, x, y, true, true);
}
/**
* Connect a horizontal and a vertical scroll into a pair so that they
* co-operate during 2D drags.
*
* \param horizontal_scroll the scroll used for horizontal scrolling
* \param vertical_scroll the scroll used for vertical scrolling
*/
void scroll_make_pair(struct scroll *horizontal_scroll,
struct scroll *vertical_scroll)
{
assert(horizontal_scroll->horizontal && !vertical_scroll->horizontal);
horizontal_scroll->pair = vertical_scroll;
vertical_scroll->pair = horizontal_scroll;
}
void *scroll_get_data(struct scroll *scroll)
{
return scroll->client_data;
}

89
desktop/scroll.h
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@ -1,89 +0,0 @@
/*
* Copyright 2009 Paul Blokus <paul_pl@users.sourceforge.net>
*
* This file is part of NetSurf, http://www.netsurf-browser.org/
*
* NetSurf is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* NetSurf is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/** \file
* Scroll widget (interface).
*/
#ifndef _NETSURF_DESKTOP_SCROLL_H_
#define _NETSURF_DESKTOP_SCROLL_H_
#include <stdbool.h>
#include "desktop/browser.h"
#define SCROLLBAR_WIDTH 16
struct scroll;
typedef enum {
SCROLL_MSG_REDRAW, /* the scrollbar requests a redraw */
SCROLL_MSG_MOVED, /* the scroll value has changed */
SCROLL_MSG_SCROLL_START, /* a scroll drag has started, all mouse
* events should be passed to
* the scrollbar regardless of the
* coordinates
*/
SCROLL_MSG_SCROLL_FINISHED, /* cancel the above */
} scroll_msg;
struct scroll_msg_data {
struct scroll *scroll;
scroll_msg msg;
int new_scroll;
int x0, y0, x1, y1;
};
/**
* Client callback for the scroll.
*
* \param client_data user data passed at scroll creation
* \param scroll_data struct all necessary message data
*/
typedef void(*scroll_client_callback)(void *client_data,
struct scroll_msg_data *scroll_data);
bool scroll_create(bool horizontal, int length,
int scrolled_dimension, int scrolled_visible,
void *client_data, scroll_client_callback client_callback,
struct scroll **scroll_pt);
void scroll_destroy(struct scroll *scroll);
bool scroll_redraw(struct scroll *scroll, int x, int y,
const struct rect *clip, float scale);
void scroll_set(struct scroll *scroll, int scroll_val, bool bar);
int scroll_get_offset(struct scroll *scroll);
void scroll_set_extents(struct scroll *scroll, int length,
int scrolled_visible, int scrolled_dimension);
bool scroll_is_horizontal(struct scroll *scroll);
const char *scroll_mouse_action(struct scroll *scroll,
browser_mouse_state mouse, int x, int y);
void scroll_mouse_drag_end(struct scroll *scroll, browser_mouse_state mouse,
int x, int y);
void scroll_start_content_drag(struct scroll *scroll, int x, int y);
void scroll_make_pair(struct scroll *horizontal_scroll,
struct scroll *vertical_scroll);
void *scroll_get_data(struct scroll *scroll);
#endif

826
desktop/scrollbar.c Normal file
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@ -0,0 +1,826 @@
/*
* Copyright 2004-2008 James Bursa <bursa@users.sourceforge.net>
* Copyright 2008 Michael Drake <tlsa@netsurf-browser.org>
* Copyright 2009 Paul Blokus <paul_pl@users.sourceforge.net>
*
* This file is part of NetSurf, http://www.netsurf-browser.org/
*
* NetSurf is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* NetSurf is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/** \file
* Scrollbar widget (implementation).
*/
#include <stdbool.h>
#include <stdlib.h>
#include "desktop/mouse.h"
#include "desktop/scrollbar.h"
#include "desktop/plotters.h"
#include "desktop/plot_style.h"
#include "utils/log.h"
#include "utils/messages.h"
#include "utils/utils.h"
struct scrollbar {
bool horizontal; /* Horizontal scrollbar if true, else vertical
*/
int length; /* Length of the scrollbar widget */
int scrolled_d; /* The dimension of the scrolled area */
int scrolled_vis; /* The visible part of the scrolled area */
int area_scroll; /* Scroll value of the scrolled area */
int bar_off; /* Offset of the scrollbar */
int bar_len; /* Length of the scrollbar */
scrollbar_client_callback client_callback; /* Callback receiving
* scrollbar events */
void *client_data; /* User data passed to the callback */
bool dragging; /* Flag indicating drag at progess */
int drag_start_coord; /* Coordinate value at drag start */
int drag_start_bar_off; /* Scrollbar offset at drag start */
bool reverse; /* Flag indicating that the scrollbar moves
* in the opposite direction to the mouse
*/
struct scrollbar *pair; /* Parpendicular scrollbar, or NULL */
bool pair_drag; /* Flag indicating that the current drag affects
the perpendicular scrollbar too */
};
/** Overflow scrollbar colours
*
* Overflow scrollbar colours can be set by front end code to try to match
* scrollbar colours used on the desktop.
*
* If a front end doesn't set scrollbar colours, these defaults are used.
*/
colour scrollbar_widget_fg_colour = 0x00d9d9d9; /* light grey */
colour scrollbar_widget_bg_colour = 0x006b6b6b; /* mid grey */
colour scrollbar_widget_arrow_colour = 0x00444444; /* dark grey */
/**
* Create a scrollbar.
*
* \param horizontal true for a horizontal scrollbar false for a
* vertical one
* \param length full length of the scrollbar widget
* \param scrolled_dimension full length of the scrolled area
* \param scrolled_visible length of the visible part of the scrolled area
* \param client_data data for the client callback
* \param client_callback client callback for scrollbar events
* \param scrollbar gets updated to point at the newly created
* scrollbar
* \return true if scrollbar has been created succesfully
* or false on memory exhaustion
*/
bool scrollbar_create(bool horizontal, int length,
int scrolled_dimension, int scrolled_visible,
void *client_data, scrollbar_client_callback client_callback,
struct scrollbar **scrollbar_pt)
{
struct scrollbar *scrollbar;
int well_length;
scrollbar = malloc(sizeof(struct scrollbar));
if (scrollbar == NULL) {
LOG(("malloc failed"));
warn_user("NoMemory", 0);
*scrollbar_pt = NULL;
return false;
}
scrollbar->horizontal = horizontal;
scrollbar->length = length;
scrollbar->scrolled_d = scrolled_dimension;
scrollbar->scrolled_vis = scrolled_visible;
scrollbar->area_scroll = 0;
scrollbar->bar_off = 0;
scrollbar->reverse = false;
scrollbar->pair = NULL;
scrollbar->pair_drag = false;
well_length = length - 2 * SCROLLBAR_WIDTH;
scrollbar->bar_len = (well_length * scrolled_visible) /
scrolled_dimension;
scrollbar->client_callback = client_callback;
scrollbar->client_data = client_data;
scrollbar->dragging = false;
*scrollbar_pt = scrollbar;
return true;
}
/**
* Destroy a scrollbar.
*
* \param scrollbar the scrollbar to be destroyed
*/
void scrollbar_destroy(struct scrollbar *scrollbar)
{
if (scrollbar->pair != NULL)
scrollbar->pair->pair = NULL;
free(scrollbar);
}
/**
* Draw an outline rectangle common to a several scrollbar elements.
*
* \param x0 left border of the outline
* \param y0 top border of the outline
* \param x1 right border of the outline
* \param y1 bottom border of the outline
* \param c base colour of the outline, the other colours are created by
* lightening or darkening this one
* \param inset true for inset outline, false for an outset one
* \return
*/
static inline bool scrollbar_redraw_scrollbar_rectangle(int x0, int y0,
int x1, int y1, colour c, bool inset)
{
static plot_style_t c0 = {
.stroke_type = PLOT_OP_TYPE_SOLID,
.stroke_width = 1,
};
static plot_style_t c1 = {
.stroke_type = PLOT_OP_TYPE_SOLID,
.stroke_width = 1,
};
static plot_style_t c2 = {
.stroke_type = PLOT_OP_TYPE_SOLID,
.stroke_width = 1,
};
if (inset) {
c0.stroke_colour = darken_colour(c);
c1.stroke_colour = lighten_colour(c);
} else {
c0.stroke_colour = lighten_colour(c);
c1.stroke_colour = darken_colour(c);
}
c2.stroke_colour = blend_colour(c0.stroke_colour, c1.stroke_colour);
/* Plot the outline */
if (!plot.line(x0, y0, x1, y0, &c0)) return false;
if (!plot.line(x1, y0, x1, y1 + 1, &c1)) return false;
if (!plot.line(x1, y0, x1, y0 + 1, &c2)) return false;
if (!plot.line(x1, y1, x0, y1, &c1)) return false;
if (!plot.line(x0, y1, x0, y0, &c0)) return false;
if (!plot.line(x0, y1, x0, y1 + 1, &c2)) return false;
return true;
}
/**
* Redraw a part of the scrollbar.
*
* \param scrollbar the scrollbar to be redrawn
* \param x the X coordinate to draw the scrollbar at
* \param y the Y coordinate to draw the scrollbar at
* \param clip the clipping rectangle
* \param scale scale for the redraw
* \return true on succes false otherwise
*/
bool scrollbar_redraw(struct scrollbar *scrollbar, int x, int y,
const struct rect *clip, float scale)
{
int w = SCROLLBAR_WIDTH;
int well_length, bar_off, bar_c0, bar_c1;
int v[6]; /* array of triangle vertices */
int x0, y0, x1, y1;
plot_style_t pstyle_scrollbar_widget_bg_colour = {
.fill_type = PLOT_OP_TYPE_SOLID,
.fill_colour = scrollbar_widget_bg_colour,
};
plot_style_t pstyle_scrollbar_widget_fg_colour = {
.fill_type = PLOT_OP_TYPE_SOLID,
.fill_colour = scrollbar_widget_fg_colour,
};
plot_style_t pstyle_scrollbar_widget_arrow_colour = {
.fill_type = PLOT_OP_TYPE_SOLID,
.fill_colour = scrollbar_widget_arrow_colour,
};
well_length = scrollbar->length - 2 * SCROLLBAR_WIDTH;
x0 = x;
y0 = y;
x1 = x + (scrollbar->horizontal ?
scrollbar->length : SCROLLBAR_WIDTH) - 1;
y1 = y + (scrollbar->horizontal ?
SCROLLBAR_WIDTH : scrollbar->length) - 1;
bar_off = scrollbar->bar_off;
bar_c1 = (scrollbar->horizontal ? x0 : y0) + SCROLLBAR_WIDTH +
scrollbar->bar_off + scrollbar->bar_len - 1;
if (scale != 1.0) {
w *= scale;
well_length *= scale;
x0 *= scale;
y0 *= scale;
x1 *= scale;
y1 *= scale;
bar_off *= scale;
bar_c1 *= scale;
}
bar_c0 = (scrollbar->horizontal ? x0 : y0) + w + bar_off;
if (x1 < clip->x0 || y1 < clip->y0 || clip->x1 < x0 || clip->y1 < y0)
/* scrollbar is outside the clipping rectangle, nothing to
* render */
return true;
if (scrollbar->horizontal) {
/* scrollbar is horizontal */
/* scrollbar outline */
if (!scrollbar_redraw_scrollbar_rectangle(x0, y0, x1, y1,
scrollbar_widget_bg_colour, true))
return false;
/* left arrow icon border */
if (!scrollbar_redraw_scrollbar_rectangle(x0 + 1,
y0 + 1,
x0 + w - 2,
y1 - 1,
scrollbar_widget_fg_colour, false))
return false;
/* left arrow icon background */
if (!plot.rectangle(x0 + 2,
y0 + 2,
x0 + w - 2,
y1 - 1,
&pstyle_scrollbar_widget_fg_colour))
return false;
/* left arrow */
v[0] = x0 + w / 4;
v[1] = y0 + w / 2;
v[2] = x0 + w * 3 / 4;
v[3] = y0 + w / 4;
v[4] = x0 + w * 3 / 4;
v[5] = y0 + w * 3 / 4;
if (!plot.polygon(v, 3, &pstyle_scrollbar_widget_arrow_colour))
return false;
/* scrollbar well background */
if (!plot.rectangle(x0 + w - 1,
y0 + 1,
x1 - w + 2,
y1,
&pstyle_scrollbar_widget_bg_colour))
return false;
/* scrollbar position indicator bar */
if (!scrollbar_redraw_scrollbar_rectangle(bar_c0,
y0 + 1,
bar_c1,
y1 - 1,
scrollbar_widget_fg_colour, false))
return false;
if (!plot.rectangle(bar_c0 + 1,
y0 + 2,
bar_c1,
y1 - 1,
&pstyle_scrollbar_widget_fg_colour))
return false;
/* right arrow icon border */
if (!scrollbar_redraw_scrollbar_rectangle(x1 - w + 2,
y0 + 1,
x1 - 1,
y1 - 1,
scrollbar_widget_fg_colour, false))
return false;
/* right arrow icon background */
if (!plot.rectangle(x1 - w + 3,
y0 + 2,
x1 - 1,
y1 - 1,
&pstyle_scrollbar_widget_fg_colour))
return false;
/* right arrow */
v[0] = x1 - w / 4 + 1;
v[1] = y0 + w / 2;
v[2] = x1 - w * 3 / 4 + 1;
v[3] = y0 + w / 4;
v[4] = x1 - w * 3 / 4 + 1;
v[5] = y0 + w * 3 / 4;
if (!plot.polygon(v, 3, &pstyle_scrollbar_widget_arrow_colour))
return false;
} else {
/* scrollbar is vertical */
/* outline */
if (!scrollbar_redraw_scrollbar_rectangle(x0, y0, x1, y1,
scrollbar_widget_bg_colour,
true))
return false;
/* top arrow background */
if (!scrollbar_redraw_scrollbar_rectangle(x0 + 1,
y0 + 1,
x1 - 1,
y0 + w - 2,
scrollbar_widget_fg_colour,
false))
return false;
if (!plot.rectangle(x0 + 2,
y0 + 2,
x1 - 1,
y0 + w - 2,
&pstyle_scrollbar_widget_fg_colour))
return false;
/* up arrow */
v[0] = x0 + w / 2;
v[1] = y0 + w / 4;
v[2] = x0 + w / 4;
v[3] = y0 + w * 3 / 4;
v[4] = x0 + w * 3 / 4;
v[5] = y0 + w * 3 / 4;
if (!plot.polygon(v, 3, &pstyle_scrollbar_widget_arrow_colour))
return false;
/* scrollbar well background */
if (!plot.rectangle(x0 + 1,
y0 + w - 1,
x1,
y1 - w + 2,
&pstyle_scrollbar_widget_bg_colour))
return false;
/* scrollbar position indicator bar */
if (!scrollbar_redraw_scrollbar_rectangle(x0 + 1,
bar_c0,
x1 - 1,
bar_c1,
scrollbar_widget_fg_colour, false))
return false;
if (!plot.rectangle(x0 + 2,
bar_c0 + 1,
x1 - 1,
bar_c1,
&pstyle_scrollbar_widget_fg_colour))
return false;
/* bottom arrow background */
if (!scrollbar_redraw_scrollbar_rectangle(x0 + 1,
y1 - w + 2,
x1 - 1,
y1 - 1,
scrollbar_widget_fg_colour, false))
return false;
if (!plot.rectangle(x0 + 2,
y1 - w + 3,
x1 - 1,
y1 - 1,
&pstyle_scrollbar_widget_fg_colour))
return false;
/* down arrow */
v[0] = x0 + w / 2;
v[1] = y1 - w / 4 + 1;
v[2] = x0 + w / 4;
v[3] = y1 - w * 3 / 4 + 1;
v[4] = x0 + w * 3 / 4;
v[5] = y1 - w * 3 / 4 + 1;
if (!plot.polygon(v, 3, &pstyle_scrollbar_widget_arrow_colour))
return false;
}
return true;
}
/**
* Set the value of the scrollbar.
*
* \param scrollbar the scrollbar to have the value set
* \param scroll_val the new value to be set
* \param bar_pos true if the value is for the scrollbar indication bar
* offset, false if it is for the scrolled area one
*/
void scrollbar_set(struct scrollbar *scrollbar, int scroll_val, bool bar_pos)
{
int well_length;
struct scrollbar_msg_data msg;
if (scroll_val < 0)
scroll_val = 0;
if (scrollbar->scrolled_d == scrollbar->scrolled_vis)
return;
well_length = scrollbar->length - 2 * SCROLLBAR_WIDTH;
if (bar_pos) {
if (scroll_val > well_length - scrollbar->bar_len)
scrollbar->bar_off = well_length - scrollbar->bar_len;
else
scrollbar->bar_off = scroll_val;
scrollbar->area_scroll = ((scrollbar->scrolled_d -
scrollbar->scrolled_vis) *
(scrollbar->bar_off)) /
(well_length - scrollbar->bar_len);
} else {
if (scroll_val > scrollbar->scrolled_d -
scrollbar->scrolled_vis)
scrollbar->area_scroll = scrollbar->scrolled_d -
scrollbar->scrolled_vis;
else
scrollbar->area_scroll = scroll_val;
scrollbar->bar_off = (well_length * scrollbar->area_scroll) /
scrollbar->scrolled_d;
}
msg.scrollbar = scrollbar;
msg.msg = SCROLLBAR_MSG_MOVED;
msg.new_scroll = scrollbar->area_scroll;
scrollbar->client_callback(scrollbar->client_data, &msg);
msg.msg = SCROLLBAR_MSG_REDRAW;
msg.x0 = scrollbar->horizontal ? SCROLLBAR_WIDTH - 1 : 0;
msg.y0 = scrollbar->horizontal ? 0 : SCROLLBAR_WIDTH - 1;
msg.x1 = (scrollbar->horizontal ?
scrollbar->length - SCROLLBAR_WIDTH + 1 :
SCROLLBAR_WIDTH);
msg.y1 = (scrollbar->horizontal ?
SCROLLBAR_WIDTH :
scrollbar->length - SCROLLBAR_WIDTH + 1);
scrollbar->client_callback(scrollbar->client_data, &msg);
}
/**
* Get the scroll offset for the visible part of the scrolled area.
*
* \param scrollbar the scrollbar to get the scroll offset value from
* \return scroll offset for the scrolled area
*/
int scrollbar_get_offset(struct scrollbar *scrollbar)
{
if (scrollbar == NULL)
return 0;
return scrollbar->area_scroll;
}
/**
* Set the length of the scrollbar and the visible or scrolled part of the
* scrolled area.
*
* \param scrollbar the scrollbar to set the values for
* \param length -1 or the new scrollbar length to be set
* \param scrolled_visible -1 or the new value of the visible part of the
* scrolled area to be set
* \param scrolled_dimension -1 or the new dimension of the scrolled content
*/
void scrollbar_set_extents(struct scrollbar *scrollbar, int length,
int scrolled_visible, int scrolled_dimension)
{
int well_length;
if (length != -1)
scrollbar->length = length;
if (scrolled_visible != -1)
scrollbar->scrolled_vis = scrolled_visible;
if (scrolled_dimension != -1)
scrollbar->scrolled_d = scrolled_dimension;
well_length = length - 2 * SCROLLBAR_WIDTH;
scrollbar->bar_len = (well_length * scrolled_visible) /
scrollbar->scrolled_d;
scrollbar->bar_off = (well_length * scrollbar->area_scroll) /
scrollbar->scrolled_d;
}
/**
* Check the orientation of the scrollbar.
*
* \param scrollbar the scrollbar to check the orientation of
* \return true for a horizontal scrollbar, else false (vertical
*/
bool scrollbar_is_horizontal(struct scrollbar *scrollbar)
{
return scrollbar->horizontal;
}
/**
* Internal procedure used for starting a drag scroll for a scrollbar.
*
* \param scrollbar the scrollbar to start the drag for
* \param x the X coordinate of the drag start
* \param y the Y coordinate of the drag start
* \param reverse whether this should be a reverse drag (used when the
* user drags the content area, rather than the scrollbar)
* \param pair whether the drag is a '2D' scroll
*/
static void scrollbar_drag_start_internal(struct scrollbar *scrollbar,
int x, int y, bool reverse, bool pair)
{
struct scrollbar_msg_data msg;
scrollbar->drag_start_coord = scrollbar->horizontal ? x : y;
scrollbar->drag_start_bar_off = scrollbar->bar_off;
scrollbar->dragging = true;
scrollbar->reverse = reverse;
msg.scrollbar = scrollbar;
/* \todo - some proper numbers please! */
if (scrollbar->horizontal) {
msg.x0 = -1024;
msg.x1 = 1024;
msg.y0 = 0;
msg.y1 = 0;
} else {
msg.x0 = 0;
msg.x1 = 0;
msg.y0 = -1024;
msg.y1 = 1024;
}
if (pair && scrollbar->pair != NULL) {
scrollbar->pair_drag = true;
scrollbar->pair->drag_start_coord =
scrollbar->pair->horizontal ? x : y;
scrollbar->pair->drag_start_bar_off = scrollbar->pair->bar_off;
scrollbar->pair->dragging = true;
scrollbar->pair->reverse = reverse;
if (scrollbar->pair->horizontal) {
msg.x0 = -1024;
msg.x1 = 1024;
} else {
msg.y0 = -1024;
msg.y1 = 1024;
}
}
msg.msg = SCROLLBAR_MSG_SCROLL_START;
scrollbar->client_callback(scrollbar->client_data, &msg);
}
/**
* Handle mouse actions other then drag ends.
*
* \param scrollbar the scrollbar which gets the mouse action
* \param mouse mouse state
* \param x X coordinate of the mouse
* \param y Y coordinate of the mouse
* \return message for the status bar or NULL on failure
*/
const char *scrollbar_mouse_action(struct scrollbar *scrollbar,
browser_mouse_state mouse, int x, int y)
{
int x0, y0, x1, y1;
int val;
const char *status;
bool h;
/* we want mouse presses and mouse drags that were not started at the
* scrollbar indication bar to be launching actions on the scroll area
*/
bool but1 = ((mouse & BROWSER_MOUSE_PRESS_1) ||
((mouse & BROWSER_MOUSE_HOLDING_1) &&
(mouse & BROWSER_MOUSE_DRAG_ON) &&
!scrollbar->dragging));
bool but2 = ((mouse & BROWSER_MOUSE_PRESS_2) ||
((mouse & BROWSER_MOUSE_HOLDING_2) &&
(mouse & BROWSER_MOUSE_DRAG_ON) &&
!scrollbar->dragging));
h = scrollbar->horizontal;
x0 = 0;
y0 = 0;
x1 = h ? scrollbar->length : SCROLLBAR_WIDTH;
y1 = h ? SCROLLBAR_WIDTH : scrollbar->length;
if (!scrollbar->dragging &&
!(x >= x0 && x <= x1 && y >= y0 && y <= y1)) {
/* Not a drag and mouse outside scrollbar widget */
return NULL;
}
if (h)
val = x;
else
val = y;
if (scrollbar->dragging) {
val -= scrollbar->drag_start_coord;
if (scrollbar->reverse)
val = -val;
if (val != 0)
scrollbar_set(scrollbar,
scrollbar->drag_start_bar_off + val,
true);
if (scrollbar->pair_drag) {
scrollbar_mouse_action(scrollbar->pair, mouse, x, y);
status = messages_get("ScrollBoth");
} else
status = messages_get(h ? "ScrollH" : "ScrollV");
return status;
}
if (val < SCROLLBAR_WIDTH) {
/* left/up arrow */
status = messages_get(h ? "ScrollLeft" : "ScrollUp");
if (but1)
scrollbar_set(scrollbar,
scrollbar->bar_off - SCROLLBAR_WIDTH,
true);
else if (but2)
scrollbar_set(scrollbar,
scrollbar->bar_off + SCROLLBAR_WIDTH,
true);
} else if (val < SCROLLBAR_WIDTH + scrollbar->bar_off) {
/* well between left/up arrow and bar */
status = messages_get(h ? "ScrollPLeft" : "ScrollPUp");
if (but1)
scrollbar_set(scrollbar,
scrollbar->area_scroll - scrollbar->length,
false);
else if (but2)
scrollbar_set(scrollbar,
scrollbar->area_scroll + scrollbar->length,
false);
} else if (val > scrollbar->length - SCROLLBAR_WIDTH) {
/* right/down arrow */
status = messages_get(h ? "ScrollRight" : "ScrollDown");
if (but1)
scrollbar_set(scrollbar,
scrollbar->bar_off + SCROLLBAR_WIDTH,
true);
else if (but2)
scrollbar_set(scrollbar,
scrollbar->bar_off - SCROLLBAR_WIDTH,
true);
} else if (val > SCROLLBAR_WIDTH + scrollbar->bar_off + scrollbar->bar_len) {
/* well between right/down arrow and bar */
status = messages_get(h ? "ScrollPRight" : "ScrollPDown");
if (but1)
scrollbar_set(scrollbar,
scrollbar->area_scroll + scrollbar->length,
false);
else if (but2)
scrollbar_set(scrollbar,
scrollbar->area_scroll - scrollbar->length,
false);
}
else {
/* scrollbar position indication bar */
status = messages_get(h ? "ScrollH" : "ScrollV");
}
if (mouse & (BROWSER_MOUSE_DRAG_1 | BROWSER_MOUSE_DRAG_2) &&
(val >= SCROLLBAR_WIDTH + scrollbar->bar_off
&& val < SCROLLBAR_WIDTH + scrollbar->bar_off +
scrollbar->bar_len))
/* The mouse event is a drag start on the scrollbar position
* indication bar. */
scrollbar_drag_start_internal(scrollbar, x, y, false,
(mouse & BROWSER_MOUSE_DRAG_2) ? true : false);
return status;
}
/**
* Handle end of mouse drags.
*
* \param scrollbar the scrollbar for which the drag ends
* \param mouse mouse state
* \param x X coordinate of the mouse
* \param y Y coordinate of the mouse
*/
void scrollbar_mouse_drag_end(struct scrollbar *scrollbar,
browser_mouse_state mouse, int x, int y)
{
struct scrollbar_msg_data msg;
int val;
assert(scrollbar->dragging);
val = (scrollbar->horizontal ? x : y) - scrollbar->drag_start_coord;
if (scrollbar->reverse)
val = -val;
if (val != 0)
scrollbar_set(scrollbar, scrollbar->drag_start_bar_off + val,
true);
scrollbar->dragging = false;
scrollbar->reverse = false;
if (scrollbar->pair_drag) {
scrollbar->pair_drag = false;
val = (scrollbar->pair->horizontal ? x : y) -
scrollbar->pair->drag_start_coord;
if (scrollbar->pair->reverse)
val = -val;
if (val != 0)
scrollbar_set(scrollbar->pair,
scrollbar->pair->drag_start_bar_off + val,
true);
scrollbar->pair->dragging = false;
scrollbar->pair->reverse = false;
}
msg.scrollbar = scrollbar;
msg.msg = SCROLLBAR_MSG_SCROLL_FINISHED;
scrollbar->client_callback(scrollbar->client_data, &msg);
}
/**
* Called when the content is being dragged to the scrollbars have to adjust.
* If the content has both scrollbars, and scrollbar_make_pair has beed called
* before, only the one scroll which will receive further mouse events has to be
* passed.
*
* \param scrollbar one of the the scrollbars owned by the dragged content
* \param x X coordinate of mouse during drag start
* \param y Y coordinate of mouse during drag start
*/
void scrollbar_start_content_drag(struct scrollbar *scrollbar, int x, int y)
{
scrollbar_drag_start_internal(scrollbar, x, y, true, true);
}
/**
* Connect a horizontal and a vertical scrollbar into a pair so that they
* co-operate during 2D drags.
*
* \param horizontal_scrollbar the scrollbar used for horizontal scrolling
* \param vertical_scrollbar the scrollbar used for vertical scrolling
*/
void scrollbar_make_pair(struct scrollbar *horizontal_scrollbar,
struct scrollbar *vertical_scrollbar)
{
assert(horizontal_scrollbar->horizontal &&
!vertical_scrollbar->horizontal);
horizontal_scrollbar->pair = vertical_scrollbar;
vertical_scrollbar->pair = horizontal_scrollbar;
}
void *scrollbar_get_data(struct scrollbar *scrollbar)
{
return scrollbar->client_data;
}

95
desktop/scrollbar.h Normal file
View File

@ -0,0 +1,95 @@
/*
* Copyright 2009 Paul Blokus <paul_pl@users.sourceforge.net>
*
* This file is part of NetSurf, http://www.netsurf-browser.org/
*
* NetSurf is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* NetSurf is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/** \file
* Scrollbar widget (interface).
*/
#ifndef _NETSURF_DESKTOP_SCROLLBAR_H_
#define _NETSURF_DESKTOP_SCROLLBAR_H_
#include <stdbool.h>
#include "desktop/browser.h"
#define SCROLLBAR_WIDTH 16
struct scrollbar;
typedef enum {
SCROLLBAR_MSG_REDRAW, /* the scrollbar requests a redraw */
SCROLLBAR_MSG_MOVED, /* the scroll value has changed */
SCROLLBAR_MSG_SCROLL_START, /* a scrollbar drag has started, all
* mouse events should be passed to
* the scrollbar regardless of the
* coordinates
*/
SCROLLBAR_MSG_SCROLL_FINISHED, /* cancel the above */
} scrollbar_msg;
struct scrollbar_msg_data {
struct scrollbar *scrollbar;
scrollbar_msg msg;
int new_scroll;
int x0, y0, x1, y1;
};
/**
* Client callback for the scrollbar.
*
* \param client_data user data passed at scroll creation
* \param scrollbar_data struct all necessary message data
*/
typedef void(*scrollbar_client_callback)(void *client_data,
struct scrollbar_msg_data *scrollbar_data);
bool scrollbar_create(bool horizontal, int length,
int scrolled_dimension, int scrolled_visible,
void *client_data, scrollbar_client_callback client_callback,
struct scrollbar **scrollbar);
void scrollbar_destroy(struct scrollbar *scrollbar);
bool scrollbar_redraw(struct scrollbar *scrollbar, int x, int y,
const struct rect *clip, float scale);
void scrollbar_set(struct scrollbar *scrollbar, int scrollbar_val, bool bar);
int scrollbar_get_offset(struct scrollbar *scrollbar);
void scrollbar_set_extents(struct scrollbar *scrollbar, int length,
int scrolled_visible, int scrolled_dimension);
bool scrollbar_is_horizontal(struct scrollbar *scrollbar);
const char *scrollbar_mouse_action(struct scrollbar *scrollbar,
browser_mouse_state mouse, int x, int y);
void scrollbar_mouse_drag_end(struct scrollbar *scrollbar,
browser_mouse_state mouse, int x, int y);
void scrollbar_start_content_drag(struct scrollbar *scrollbar, int x, int y);
void scrollbar_make_pair(struct scrollbar *horizontal_scrollbar,
struct scrollbar *vertical_scrollbar);
void *scrollbar_get_data(struct scrollbar *scrollbar);
#endif

67
desktop/textinput.c
View File

@ -31,7 +31,7 @@
#include "desktop/browser.h"
#include "desktop/gui.h"
#include "desktop/mouse.h"
#include "desktop/scroll.h"
#include "desktop/scrollbar.h"
#include "desktop/selection.h"
#include "desktop/textinput.h"
#include "render/box.h"
@ -287,11 +287,11 @@ void browser_window_textarea_click(struct browser_window *bw,
textarea->gadget->caret_box_offset = char_offset;
textarea->gadget->caret_pixel_offset = pixel_offset;
box_x += scroll_get_offset(textarea->scroll_x);
box_y += scroll_get_offset(textarea->scroll_y);
box_x += scrollbar_get_offset(textarea->scroll_x);
box_y += scrollbar_get_offset(textarea->scroll_y);
scrolled = ensure_caret_visible(bw, textarea);
box_x -= scroll_get_offset(textarea->scroll_x);
box_y -= scroll_get_offset(textarea->scroll_y);
box_x -= scrollbar_get_offset(textarea->scroll_x);
box_y -= scrollbar_get_offset(textarea->scroll_y);
browser_window_place_caret(bw,
box_x + inline_container->x + text_box->x +
@ -342,8 +342,8 @@ bool browser_window_textarea_callback(struct browser_window *bw,
#endif
box_coords(textarea, &box_x, &box_y);
box_x -= scroll_get_offset(textarea->scroll_x);
box_y -= scroll_get_offset(textarea->scroll_y);
box_x -= scrollbar_get_offset(textarea->scroll_x);
box_y -= scrollbar_get_offset(textarea->scroll_y);
if (!(key <= 0x001F || (0x007F <= key && key <= 0x009F))) {
/* normal character insertion */
@ -767,8 +767,9 @@ bool browser_window_textarea_callback(struct browser_window *bw,
assert(char_offset <= text_box->length);
/* Scroll back to the left */
if (textarea->scroll_x != NULL) {
box_x += scroll_get_offset(textarea->scroll_x);
scroll_set(textarea->scroll_x, 0, false);
box_x += scrollbar_get_offset(
textarea->scroll_x);
scrollbar_set(textarea->scroll_x, 0, false);
}
} else {
assert(!text_box->next ||
@ -790,11 +791,11 @@ bool browser_window_textarea_callback(struct browser_window *bw,
textarea->gadget->caret_box_offset = char_offset;
textarea->gadget->caret_pixel_offset = pixel_offset;
box_x += scroll_get_offset(textarea->scroll_x);
box_y += scroll_get_offset(textarea->scroll_y);
box_x += scrollbar_get_offset(textarea->scroll_x);
box_y += scrollbar_get_offset(textarea->scroll_y);
scrolled = ensure_caret_visible(bw, textarea);
box_x -= scroll_get_offset(textarea->scroll_x);
box_y -= scroll_get_offset(textarea->scroll_y);
box_x -= scrollbar_get_offset(textarea->scroll_x);
box_y -= scrollbar_get_offset(textarea->scroll_y);
browser_window_place_caret(bw,
box_x + inline_container->x + text_box->x +
@ -1414,11 +1415,11 @@ bool browser_window_textarea_paste_text(struct browser_window *bw,
textarea->gadget->caret_pixel_offset = pixel_offset;
box_coords(textarea, &box_x, &box_y);
box_x += scroll_get_offset(textarea->scroll_x);
box_y += scroll_get_offset(textarea->scroll_y);
box_x += scrollbar_get_offset(textarea->scroll_x);
box_y += scrollbar_get_offset(textarea->scroll_y);
ensure_caret_visible(bw, textarea);
box_x -= scroll_get_offset(textarea->scroll_x);
box_y -= scroll_get_offset(textarea->scroll_y);
box_x -= scrollbar_get_offset(textarea->scroll_x);
box_y -= scrollbar_get_offset(textarea->scroll_y);
browser_window_place_caret(bw,
box_x + inline_container->x + text_box->x +
@ -1534,8 +1535,8 @@ void browser_window_textarea_move_caret(struct browser_window *bw, void *p)
font_plot_style_from_css(text_box->style, &fstyle);
box_coords(textarea, &box_x, &box_y);
box_x -= scroll_get_offset(textarea->scroll_x);
box_y -= scroll_get_offset(textarea->scroll_y);
box_x -= scrollbar_get_offset(textarea->scroll_x);
box_y -= scrollbar_get_offset(textarea->scroll_y);
nsfont.font_width(&fstyle, text_box->text,
char_offset, &pixel_offset);
@ -2233,8 +2234,8 @@ bool ensure_caret_visible(struct browser_window *bw, struct box *textarea)
assert(textarea->gadget);
scrollx = scroll_get_offset(textarea->scroll_x);
scrolly = scroll_get_offset(textarea->scroll_y);
scrollx = scrollbar_get_offset(textarea->scroll_x);
scrolly = scrollbar_get_offset(textarea->scroll_y);
/* Calculate the caret coordinates */
cx = textarea->gadget->caret_pixel_offset +
@ -2244,37 +2245,37 @@ bool ensure_caret_visible(struct browser_window *bw, struct box *textarea)
/* Ensure they are visible */
if (textarea->scroll_x == NULL) {
scrollx = 0;
} else if (cx - scroll_get_offset(textarea->scroll_x) < 0) {
} else if (cx - scrollbar_get_offset(textarea->scroll_x) < 0) {
scrollx = cx;
} else if (cx > scroll_get_offset(textarea->scroll_x) +
} else if (cx > scrollbar_get_offset(textarea->scroll_x) +
textarea->width) {
scrollx = cx - textarea->width;
}
if (textarea->scroll_y == NULL) {
scrolly = 0;
} else if (cy - scroll_get_offset(textarea->scroll_y) < 0) {
} else if (cy - scrollbar_get_offset(textarea->scroll_y) < 0) {
scrolly = cy;
} else if (cy + textarea->gadget->caret_text_box->height >
scroll_get_offset(textarea->scroll_y) +
scrollbar_get_offset(textarea->scroll_y) +
textarea->height) {
scrolly = (cy + textarea->gadget->caret_text_box->height) -
textarea->height;
}
if ((scrollx == scroll_get_offset(textarea->scroll_x)) &&
(scrolly == scroll_get_offset(textarea->scroll_y)))
if ((scrollx == scrollbar_get_offset(textarea->scroll_x)) &&
(scrolly == scrollbar_get_offset(textarea->scroll_y)))
return false;
if (textarea->scroll_x != NULL) {
bw->scroll = textarea->scroll_x;
scroll_set(textarea->scroll_x, scrollx, false);
bw->scroll = NULL;
bw->scrollbar = textarea->scroll_x;
scrollbar_set(textarea->scroll_x, scrollx, false);
bw->scrollbar = NULL;
}
if (textarea->scroll_y != NULL) {
bw->scroll = textarea->scroll_x;
scroll_set(textarea->scroll_y, scrolly, false);
bw->scroll = NULL;
bw->scrollbar = textarea->scroll_x;
scrollbar_set(textarea->scroll_y, scrolly, false);
bw->scrollbar = NULL;
}
return true;

66
render/box.c
View File

@ -31,7 +31,7 @@
#include "content/hlcache.h"
#include "css/css.h"
#include "css/dump.h"
#include "desktop/scroll.h"
#include "desktop/scrollbar.h"
#include "desktop/options.h"
#include "render/box.h"
#include "render/form.h"
@ -277,9 +277,9 @@ void box_free_box(struct box *box)
if (box->gadget)
form_free_control(box->gadget);
if (box->scroll_x != NULL)
scroll_destroy(box->scroll_x);
scrollbar_destroy(box->scroll_x);
if (box->scroll_y != NULL)
scroll_destroy(box->scroll_y);
scrollbar_destroy(box->scroll_y);
if (box->styles != NULL)
css_select_results_destroy(box->styles);
}
@ -307,8 +307,8 @@ void box_coords(struct box *box, int *x, int *y)
} while (!box->float_children);
} else
box = box->parent;
*x += box->x - scroll_get_offset(box->scroll_x);
*y += box->y - scroll_get_offset(box->scroll_y);
*x += box->x - scrollbar_get_offset(box->scroll_x);
*y += box->y - scrollbar_get_offset(box->scroll_y);
}
}
@ -388,9 +388,9 @@ struct box *box_at_point(struct box *box, const int x, const int y,
for (child = box->float_children; child; child = child->next_float) {
if (box_contains_point(child, x - bx, y - by, &physically)) {
*box_x = bx + child->x -
scroll_get_offset(child->scroll_x);
scrollbar_get_offset(child->scroll_x);
*box_y = by + child->y -
scroll_get_offset(child->scroll_y);
scrollbar_get_offset(child->scroll_y);
if (physically)
return child;
@ -407,9 +407,9 @@ non_float_children:
continue;
if (box_contains_point(child, x - bx, y - by, &physically)) {
*box_x = bx + child->x -
scroll_get_offset(child->scroll_x);
scrollbar_get_offset(child->scroll_x);
*box_y = by + child->y -
scroll_get_offset(child->scroll_y);
scrollbar_get_offset(child->scroll_y);
if (physically)
return child;
@ -433,17 +433,17 @@ siblings:
/* siblings and siblings of ancestors */
while (box) {
if (box_is_float(box)) {
bx -= box->x - scroll_get_offset(box->scroll_x);
by -= box->y - scroll_get_offset(box->scroll_y);
bx -= box->x - scrollbar_get_offset(box->scroll_x);
by -= box->y - scrollbar_get_offset(box->scroll_y);
for (sibling = box->next_float; sibling;
sibling = sibling->next_float) {
if (box_contains_point(sibling,
x - bx, y - by, &physically)) {
*box_x = bx + sibling->x -
scroll_get_offset(
scrollbar_get_offset(
sibling->scroll_x);
*box_y = by + sibling->y -
scroll_get_offset(
scrollbar_get_offset(
sibling->scroll_y);
if (physically)
@ -463,8 +463,8 @@ siblings:
goto non_float_children;
} else {
bx -= box->x - scroll_get_offset(box->scroll_x);
by -= box->y - scroll_get_offset(box->scroll_y);
bx -= box->x - scrollbar_get_offset(box->scroll_x);
by -= box->y - scrollbar_get_offset(box->scroll_y);
for (sibling = box->next; sibling;
sibling = sibling->next) {
if (box_is_float(sibling))
@ -472,10 +472,10 @@ siblings:
if (box_contains_point(sibling, x - bx, y - by,
&physically)) {
*box_x = bx + sibling->x -
scroll_get_offset(
scrollbar_get_offset(
sibling->scroll_x);
*box_y = by + sibling->y -
scroll_get_offset(
scrollbar_get_offset(
sibling->scroll_y);
if (physically)
@ -735,14 +735,14 @@ bool box_nearest_text_box(struct box *box, int bx, int by,
if (child->type == BOX_FLOAT_LEFT ||
child->type == BOX_FLOAT_RIGHT) {
c_bx = fx + child->x -
scroll_get_offset(child->scroll_x);
scrollbar_get_offset(child->scroll_x);
c_by = fy + child->y -
scroll_get_offset(child->scroll_y);
scrollbar_get_offset(child->scroll_y);
} else {
c_bx = bx + child->x -
scroll_get_offset(child->scroll_x);
scrollbar_get_offset(child->scroll_x);
c_by = by + child->y -
scroll_get_offset(child->scroll_y);
scrollbar_get_offset(child->scroll_y);
}
if (child->float_children) {
c_fx = c_bx;
@ -1004,22 +1004,22 @@ void box_dump(FILE *stream, struct box *box, unsigned int depth)
bool box_handle_scrollbars(struct browser_window *bw, struct box *box,
bool bottom, bool right)
{
struct browser_scroll_data *data;
struct browser_scrollbar_data *data;
int padding_width, padding_height;
padding_width = box->width + box->padding[RIGHT] + box->padding[LEFT];
padding_height = box->height + box->padding[TOP] + box->padding[BOTTOM];
if (!bottom && box->scroll_x != NULL) {
data = scroll_get_data(box->scroll_x);
scroll_destroy(box->scroll_x);
data = scrollbar_get_data(box->scroll_x);
scrollbar_destroy(box->scroll_x);
free(data);
box->scroll_x = NULL;
}
if (!right && box->scroll_y != NULL) {
data = scroll_get_data(box->scroll_y);
scroll_destroy(box->scroll_y);
data = scrollbar_get_data(box->scroll_y);
scrollbar_destroy(box->scroll_y);
free(data);
box->scroll_y = NULL;
}
@ -1029,7 +1029,7 @@ bool box_handle_scrollbars(struct browser_window *bw, struct box *box,
if (right) {
if (box->scroll_y == NULL) {
data = malloc(sizeof(struct browser_scroll_data));
data = malloc(sizeof(struct browser_scrollbar_data));
if (data == NULL) {
LOG(("malloc failed"));
warn_user("NoMemory", 0);
@ -1037,7 +1037,7 @@ bool box_handle_scrollbars(struct browser_window *bw, struct box *box,
}
data->bw = bw;
data->box = box;
if (!scroll_create(false,
if (!scrollbar_create(false,
padding_height,
box->descendant_y1 - box->padding[TOP],
box->height,
@ -1046,14 +1046,14 @@ bool box_handle_scrollbars(struct browser_window *bw, struct box *box,
&(box->scroll_y)))
return false;
} else
scroll_set_extents(box->scroll_y,
scrollbar_set_extents(box->scroll_y,
padding_height, box->height,
box->descendant_y1 -
box->padding[TOP]);
}
if (bottom) {
if (box->scroll_x == NULL) {
data = malloc(sizeof(struct browser_scroll_data));
data = malloc(sizeof(struct browser_scrollbar_data));
if (data == NULL) {
LOG(("malloc failed"));
warn_user("NoMemory", 0);
@ -1061,7 +1061,7 @@ bool box_handle_scrollbars(struct browser_window *bw, struct box *box,
}
data->bw = bw;
data->box = box;
if (!scroll_create(true,
if (!scrollbar_create(true,
padding_width -
(right ? SCROLLBAR_WIDTH : 0),
box->descendant_x1 - box->padding[LEFT],
@ -1071,7 +1071,7 @@ bool box_handle_scrollbars(struct browser_window *bw, struct box *box,
&box->scroll_x))
return false;
} else
scroll_set_extents(box->scroll_x,
scrollbar_set_extents(box->scroll_x,
padding_width -
(right ? SCROLLBAR_WIDTH : 0),
box->width,
@ -1080,7 +1080,7 @@ bool box_handle_scrollbars(struct browser_window *bw, struct box *box,
}
if (right && bottom)
scroll_make_pair(box->scroll_x, box->scroll_y);
scrollbar_make_pair(box->scroll_x, box->scroll_y);
return true;
}

4
render/box.h
View File

@ -191,8 +191,8 @@ struct box {
int padding[4]; /**< Padding: TOP, RIGHT, BOTTOM, LEFT. */
struct box_border border[4]; /**< Border: TOP, RIGHT, BOTTOM, LEFT. */
struct scroll *scroll_x; /**< Horizontal scroll. */
struct scroll *scroll_y; /**< Vertical scroll. */
struct scrollbar *scroll_x; /**< Horizontal scroll. */
struct scrollbar *scroll_y; /**< Vertical scroll. */
/** Width of box taking all line breaks (including margins etc). Must
* be non-negative. */

48
render/form.c
View File

@ -41,7 +41,7 @@
#include "desktop/knockout.h"
#include "desktop/plot_style.h"
#include "desktop/plotters.h"
#include "desktop/scroll.h"
#include "desktop/scrollbar.h"
#include "render/box.h"
#include "render/font.h"
#include "render/form.h"
@ -62,7 +62,7 @@
struct form_select_menu {
int line_height;
int width, height;
struct scroll *scroll;
struct scrollbar *scrollbar;
int f_size;
bool scroll_capture;
select_menu_redraw_callback callback;
@ -90,7 +90,7 @@ static char *form_encode_item(const char *item, const char *charset,
static void form_select_menu_clicked(struct form_control *control,
int x, int y);
static void form_select_menu_scroll_callback(void *client_data,
struct scroll_msg_data *scroll_data);
struct scrollbar_msg_data *scrollbar_data);
/**
* Create a struct form.
@ -932,13 +932,13 @@ bool form_open_select_menu(void *client_data,
}
menu->client_data = client_data;
menu->callback = callback;
if (!scroll_create(false,
if (!scrollbar_create(false,
menu->height,
total_height,
menu->height,
control,
form_select_menu_scroll_callback,
&(menu->scroll))) {
&(menu->scrollbar))) {
free(menu);
return false;
}
@ -960,8 +960,8 @@ bool form_open_select_menu(void *client_data,
*/
void form_free_select_menu(struct form_control *control)
{
if (control->data.select.menu->scroll != NULL)
scroll_destroy(control->data.select.menu->scroll);
if (control->data.select.menu->scrollbar != NULL)
scrollbar_destroy(control->data.select.menu->scrollbar);
free(control->data.select.menu);
control->data.select.menu = NULL;
}
@ -1006,7 +1006,7 @@ bool form_redraw_select_menu(struct form_control *control, int x, int y,
line_height_with_spacing = line_height +
line_height * SELECT_LINE_SPACING;
scroll = scroll_get_offset(menu->scroll);
scroll = scrollbar_get_offset(menu->scrollbar);
if (scale != 1.0) {
x *= scale;
@ -1090,7 +1090,7 @@ bool form_redraw_select_menu(struct form_control *control, int x, int y,
option = option->next;
}
if (!scroll_redraw(menu->scroll,
if (!scrollbar_redraw(menu->scrollbar,
x_cp + menu->width - SCROLLBAR_WIDTH,
y_cp,
clip, scale))
@ -1148,7 +1148,7 @@ void form_select_menu_clicked(struct form_control *control, int x, int y)
int item_bottom_y;
int scroll, i;
scroll = scroll_get_offset(menu->scroll);
scroll = scrollbar_get_offset(menu->scrollbar);
line_height = menu->line_height;
line_height_with_spacing = line_height +
@ -1200,7 +1200,7 @@ const char *form_select_mouse_action(struct form_control *control,
* event is taking place on the scrollbar widget area
*/
x -= scrollbar_x;
return scroll_mouse_action(menu->scroll,
return scrollbar_mouse_action(menu->scrollbar,
mouse, x, y);
}
@ -1255,7 +1255,7 @@ void form_select_mouse_drag_end(struct form_control *control,
if (menu->scroll_capture) {
x -= menu->width - SCROLLBAR_WIDTH;
scroll_mouse_drag_end(menu->scroll, mouse, x, y);
scrollbar_mouse_drag_end(menu->scrollbar, mouse, x, y);
return;
}
@ -1274,33 +1274,33 @@ void form_select_mouse_drag_end(struct form_control *control,
* Callback for the select menus scroll
*/
void form_select_menu_scroll_callback(void *client_data,
struct scroll_msg_data *scroll_data)
struct scrollbar_msg_data *scrollbar_data)
{
struct form_control *control = client_data;
struct form_select_menu *menu = control->data.select.menu;
switch (scroll_data->msg) {
case SCROLL_MSG_REDRAW:
switch (scrollbar_data->msg) {
case SCROLLBAR_MSG_REDRAW:
menu->callback(menu->client_data,
menu->width -
SCROLLBAR_WIDTH + scroll_data->x0,
scroll_data->y0,
scroll_data->x1 - scroll_data->x0,
scroll_data->y1 - scroll_data->y0);
SCROLLBAR_WIDTH + scrollbar_data->x0,
scrollbar_data->y0,
scrollbar_data->x1 - scrollbar_data->x0,
scrollbar_data->y1 - scrollbar_data->y0);
break;
case SCROLL_MSG_MOVED:
case SCROLLBAR_MSG_MOVED:
menu->callback(menu->client_data,
0, 0,
menu->width - SCROLLBAR_WIDTH,
menu->height);
break;
case SCROLL_MSG_SCROLL_START:
case SCROLLBAR_MSG_SCROLL_START:
menu->scroll_capture = true;
gui_window_box_scroll_start(menu->bw->window,
scroll_data->x0, scroll_data->y0,
scroll_data->x1, scroll_data->y1);
scrollbar_data->x0, scrollbar_data->y0,
scrollbar_data->x1, scrollbar_data->y1);
break;
case SCROLL_MSG_SCROLL_FINISHED:
case SCROLLBAR_MSG_SCROLL_FINISHED:
menu->scroll_capture = false;
break;
default:

6
render/html.h
View File

@ -42,8 +42,8 @@ struct http_parameter;
struct imagemap;
struct object_params;
struct plotters;
struct scroll;
struct scroll_msg_data;
struct scrollbar;
struct scrollbar_msg_data;
/**
* Container for stylesheets used by an HTML document
@ -141,7 +141,7 @@ void html_fini(void);
void html_redraw_a_box(struct hlcache_handle *h, struct box *box);
void html_overflow_scroll_drag_end(struct scroll *scroll,
void html_overflow_scroll_drag_end(struct scrollbar *scrollbar,
browser_mouse_state mouse, int x, int y);
size_t html_selection_drag_end(struct hlcache_handle *h,
browser_mouse_state mouse, int x, int y, int dir);

86
render/html_interaction.c
View File

@ -31,7 +31,7 @@
#include "desktop/frames.h"
#include "desktop/mouse.h"
#include "desktop/options.h"
#include "desktop/scroll.h"
#include "desktop/scrollbar.h"
#include "desktop/selection.h"
#include "desktop/textinput.h"
#include "render/box.h"
@ -137,7 +137,7 @@ void html_mouse_action(struct content *c, struct browser_window *bw,
hlcache_handle *object = NULL;
struct box *next_box;
struct box *drag_candidate = NULL;
struct scroll *scroll = NULL;
struct scrollbar *scrollbar = NULL;
plot_font_style_t fstyle;
int scroll_mouse_x = 0, scroll_mouse_y = 0;
int padding_left, padding_right, padding_top, padding_bottom;
@ -164,24 +164,25 @@ void html_mouse_action(struct content *c, struct browser_window *bw,
}
return;
}
if (bw->scroll != NULL) {
struct browser_scroll_data *data = scroll_get_data(bw->scroll);
if (bw->scrollbar != NULL) {
struct browser_scrollbar_data *data =
scrollbar_get_data(bw->scrollbar);
box = data->box;
box_coords(box, &box_x, &box_y);
if (scroll_is_horizontal(bw->scroll)) {
if (scrollbar_is_horizontal(bw->scrollbar)) {
scroll_mouse_x = x - box_x ;
scroll_mouse_y = y - (box_y + box->padding[TOP] +
box->height + box->padding[BOTTOM] -
SCROLLBAR_WIDTH);
status = scroll_mouse_action(bw->scroll, mouse,
status = scrollbar_mouse_action(bw->scrollbar, mouse,
scroll_mouse_x, scroll_mouse_y);
} else {
scroll_mouse_x = x - (box_x + box->padding[LEFT] +
box->width + box->padding[RIGHT] -
SCROLLBAR_WIDTH);
scroll_mouse_y = y - box_y;
status = scroll_mouse_action(bw->scroll, mouse,
status = scrollbar_mouse_action(bw->scrollbar, mouse,
scroll_mouse_x, scroll_mouse_y);
}
@ -251,10 +252,12 @@ void html_mouse_action(struct content *c, struct browser_window *bw,
drag_candidate = box;
if (box->scroll_y != NULL || box->scroll_x != NULL) {
padding_left = box_x + scroll_get_offset(box->scroll_x);
padding_left = box_x +
scrollbar_get_offset(box->scroll_x);
padding_right = padding_left + box->padding[LEFT] +
box->width + box->padding[RIGHT];
padding_top = box_y + scroll_get_offset(box->scroll_y);
padding_top = box_y +
scrollbar_get_offset(box->scroll_y);
padding_bottom = padding_top + box->padding[TOP] +
box->height + box->padding[BOTTOM];
@ -266,7 +269,7 @@ void html_mouse_action(struct content *c, struct browser_window *bw,
SCROLLBAR_WIDTH) {
/* mouse above vertical box scroll */
scroll = box->scroll_y;
scrollbar = box->scroll_y;
scroll_mouse_x = x - (padding_right -
SCROLLBAR_WIDTH);
scroll_mouse_y = y - padding_top;
@ -277,7 +280,7 @@ void html_mouse_action(struct content *c, struct browser_window *bw,
SCROLLBAR_WIDTH) {
/* mouse above horizontal box scroll */
scroll = box->scroll_x;
scrollbar = box->scroll_x;
scroll_mouse_x = x - padding_left;
scroll_mouse_y = y - (padding_bottom -
SCROLLBAR_WIDTH);
@ -295,8 +298,8 @@ void html_mouse_action(struct content *c, struct browser_window *bw,
/* use of box_x, box_y, or content below this point is probably a
* mistake; they will refer to the last box returned by box_at_point */
if (scroll) {
status = scroll_mouse_action(scroll, mouse,
if (scrollbar) {
status = scrollbar_mouse_action(scrollbar, mouse,
scroll_mouse_x, scroll_mouse_y);
pointer = GUI_POINTER_DEFAULT;
} else if (gadget) {
@ -731,48 +734,49 @@ gui_pointer_shape get_pointer_shape(struct browser_window *bw, struct box *box,
* Callback for in-page scrolls.
*/
void html_overflow_scroll_callback(void *client_data,
struct scroll_msg_data *scroll_data)
struct scrollbar_msg_data *scrollbar_data)
{
struct browser_scroll_data *data = client_data;
struct browser_scrollbar_data *data = client_data;
struct browser_window *bw = data->bw;
struct box *box = data->box;
int x, y, box_x, box_y, diff_x, diff_y;
switch(scroll_data->msg) {
case SCROLL_MSG_REDRAW:
switch(scrollbar_data->msg) {
case SCROLLBAR_MSG_REDRAW:
diff_x = box->padding[LEFT] + box->width +
box->padding[RIGHT] - SCROLLBAR_WIDTH;
diff_y = box->padding[TOP] + box->height +
box->padding[BOTTOM] - SCROLLBAR_WIDTH;
box_coords(box, &box_x, &box_y);
if (scroll_is_horizontal(scroll_data->scroll)) {
x = box_x + scroll_get_offset(box->scroll_x);
y = box_y + scroll_get_offset(box->scroll_y) +
if (scrollbar_is_horizontal(
scrollbar_data->scrollbar)) {
x = box_x + scrollbar_get_offset(box->scroll_x);
y = box_y + scrollbar_get_offset(box->scroll_y) +
diff_y;
} else {
x = box_x + scroll_get_offset(box->scroll_x) +
x = box_x + scrollbar_get_offset(box->scroll_x) +
diff_x;
y = box_y + scroll_get_offset(box->scroll_y);
y = box_y + scrollbar_get_offset(box->scroll_y);
}
browser_window_redraw_rect(bw,
x + scroll_data->x0,
y + scroll_data->y0,
scroll_data->x1 - scroll_data->x0,
scroll_data->y1 - scroll_data->y0);
x + scrollbar_data->x0,
y + scrollbar_data->y0,
scrollbar_data->x1 - scrollbar_data->x0,
scrollbar_data->y1 - scrollbar_data->y0);
break;
case SCROLL_MSG_MOVED:
case SCROLLBAR_MSG_MOVED:
html_redraw_a_box(bw->current_content, box);
break;
case SCROLL_MSG_SCROLL_START:
bw->scroll = scroll_data->scroll;
case SCROLLBAR_MSG_SCROLL_START:
bw->scrollbar = scrollbar_data->scrollbar;
gui_window_box_scroll_start(bw->window,
scroll_data->x0, scroll_data->y0,
scroll_data->x1, scroll_data->y1);
scrollbar_data->x0, scrollbar_data->y0,
scrollbar_data->x1, scrollbar_data->y1);
break;
case SCROLL_MSG_SCROLL_FINISHED:
bw->scroll = NULL;
case SCROLLBAR_MSG_SCROLL_FINISHED:
bw->scrollbar = NULL;
browser_window_set_pointer(bw->window,
GUI_POINTER_DEFAULT);
@ -789,29 +793,29 @@ void html_overflow_scroll_callback(void *client_data,
* \param x coordinate of mouse
* \param y coordinate of mouse
*/
void html_overflow_scroll_drag_end(struct scroll *scroll,
void html_overflow_scroll_drag_end(struct scrollbar *scrollbar,
browser_mouse_state mouse, int x, int y)
{
int scroll_mouse_x, scroll_mouse_y, box_x, box_y;
struct browser_scroll_data *data = scroll_get_data(scroll);
struct browser_scrollbar_data *data = scrollbar_get_data(scrollbar);
struct box *box;
box = data->box;
box_coords(box, &box_x, &box_y);
if (scroll_is_horizontal(scroll)) {
if (scrollbar_is_horizontal(scrollbar)) {
scroll_mouse_x = x - box_x;
scroll_mouse_y = y - (box_y + box->padding[TOP] +
box->height + box->padding[BOTTOM] -
SCROLLBAR_WIDTH);
scroll_mouse_drag_end(scroll, mouse,
scrollbar_mouse_drag_end(scrollbar, mouse,
scroll_mouse_x, scroll_mouse_y);
} else {
scroll_mouse_x = x - (box_x + box->padding[LEFT] +
box->width + box->padding[RIGHT] -
SCROLLBAR_WIDTH);
scroll_mouse_y = y - box_y;
scroll_mouse_drag_end(scroll, mouse,
scrollbar_mouse_drag_end(scrollbar, mouse,
scroll_mouse_x, scroll_mouse_y);
}
}
@ -868,7 +872,7 @@ void html_box_drag_start(struct box *box, int x, int y)
scroll_mouse_y = y - (box_y + box->padding[TOP] +
box->height + box->padding[BOTTOM] -
SCROLLBAR_WIDTH);
scroll_start_content_drag(box->scroll_x,
scrollbar_start_content_drag(box->scroll_x,
scroll_mouse_x, scroll_mouse_y);
} else if (box->scroll_y != NULL) {
scroll_mouse_x = x - (box_x + box->padding[LEFT] +
@ -876,7 +880,7 @@ void html_box_drag_start(struct box *box, int x, int y)
SCROLLBAR_WIDTH);
scroll_mouse_y = y - box_y;
scroll_start_content_drag(box->scroll_y,
scrollbar_start_content_drag(box->scroll_y,
scroll_mouse_x, scroll_mouse_y);
}
}

2
render/html_internal.h
View File

@ -106,7 +106,7 @@ void html_mouse_track(struct content *c, struct browser_window *bw,
void html_mouse_action(struct content *c, struct browser_window *bw,
browser_mouse_state mouse, int x, int y);
void html_overflow_scroll_callback(void *client_data,
struct scroll_msg_data *scroll_data);
struct scrollbar_msg_data *scrollbar_data);
#endif

22
render/html_redraw.c
View File

@ -42,7 +42,7 @@
#include "desktop/options.h"
#include "desktop/print.h"
#include "desktop/search.h"
#include "desktop/scroll.h"
#include "desktop/scrollbar.h"
#include "image/bitmap.h"
#include "render/box.h"
#include "render/font.h"
@ -650,8 +650,8 @@ bool html_redraw_box(struct box *box, int x_parent, int y_parent,
return false;
if (box->object && width != 0 && height != 0) {
x_scrolled = x - scroll_get_offset(box->scroll_x) * scale;
y_scrolled = y - scroll_get_offset(box->scroll_y) * scale;
x_scrolled = x - scrollbar_get_offset(box->scroll_x) * scale;
y_scrolled = y - scrollbar_get_offset(box->scroll_y) * scale;
if (!content_redraw(box->object,
x_scrolled + padding_left,
y_scrolled + padding_top,
@ -693,9 +693,9 @@ bool html_redraw_box(struct box *box, int x_parent, int y_parent,
if (box->list_marker)
if (!html_redraw_box(box->list_marker,
x_parent + box->x -
scroll_get_offset(box->scroll_x),
scrollbar_get_offset(box->scroll_x),
y_parent + box->y -
scroll_get_offset(box->scroll_y),
scrollbar_get_offset(box->scroll_y),
clip, scale, current_background_color))
return false;
@ -716,13 +716,13 @@ bool html_redraw_box(struct box *box, int x_parent, int y_parent,
return false;
if (box->scroll_x != NULL)
scroll_redraw(box->scroll_x,
scrollbar_redraw(box->scroll_x,
x_parent + box->x,
y_parent + box->y + box->padding[TOP] +
box->height + box->padding[BOTTOM] -
SCROLLBAR_WIDTH, clip, scale);
if (box->scroll_y != NULL)
scroll_redraw(box->scroll_y,
scrollbar_redraw(box->scroll_y,
x_parent + box->x + box->padding[LEFT] +
box->width + box->padding[RIGHT] -
SCROLLBAR_WIDTH,
@ -761,18 +761,18 @@ bool html_redraw_box_children(struct box *box, int x_parent, int y_parent,
if (c->type != BOX_FLOAT_LEFT && c->type != BOX_FLOAT_RIGHT)
if (!html_redraw_box(c,
x_parent + box->x -
scroll_get_offset(box->scroll_x),
scrollbar_get_offset(box->scroll_x),
y_parent + box->y -
scroll_get_offset(box->scroll_y),
scrollbar_get_offset(box->scroll_y),
clip, scale, current_background_color))
return false;
}
for (c = box->float_children; c; c = c->next_float)
if (!html_redraw_box(c,
x_parent + box->x -
scroll_get_offset(box->scroll_x),
scrollbar_get_offset(box->scroll_x),
y_parent + box->y -
scroll_get_offset(box->scroll_y),
scrollbar_get_offset(box->scroll_y),
clip, scale, current_background_color))
return false;

2
render/layout.c
View File

@ -45,7 +45,7 @@
#include "content/content_protected.h"
#include "desktop/gui.h"
#include "desktop/options.h"
#include "desktop/scroll.h"
#include "desktop/scrollbar.h"
#include "render/box.h"
#include "render/font.h"
#include "render/form.h"