mirrors/netsurf
1
0
Fork 0
mirror of https://github.com/netsurf-browser/netsurf synced 2024-12-22 20:16:54 +03:00
Code Issues Packages Projects Releases Wiki Activity

make scrollbar redraw signal errors correctly

Browse Source 
allow scrollbar redraw to return error codes and update documentation
commenst appropriately.
This commit is contained in:
Vincent Sanders 2017-03-01 23:30:29 +00:00
parent 2f5e5620e2
commit 44c5aef1c8
5 changed files with 275 additions and 194 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
desktop/browser.c
View File

@ -154,8 +154,11 @@ browser_window_set_name(struct browser_window *bw, const char *name)
}
/* exported interface, documented in browser.h */
bool browser_window_redraw(struct browser_window *bw, int x, int y,
const struct rect *clip, const struct redraw_context *ctx)
bool
browser_window_redraw(struct browser_window *bw,
int x, int y,
const struct rect *clip,
const struct redraw_context *ctx)
{
struct redraw_context new_ctx = *ctx;
int width = 0;
@ -164,6 +167,7 @@ bool browser_window_redraw(struct browser_window *bw, int x, int y,
content_type content_type;
struct content_redraw_data data;
struct rect content_clip;
nserror res;
if (bw == NULL) {
LOG("NULL browser window");
@ -299,16 +303,22 @@ bool browser_window_redraw(struct browser_window *bw, int x, int y,
if (bw->scroll_x != NULL) {
browser_window_get_scrollbar_pos(bw, true,
&off_x, &off_y);
plot_ok &= scrollbar_redraw(bw->scroll_x,
res = scrollbar_redraw(bw->scroll_x,
x + off_x, y + off_y, clip,
bw->scale, &new_ctx);
if (res != NSERROR_OK) {
plot_ok = false;
}
}
if (bw->scroll_y != NULL) {
browser_window_get_scrollbar_pos(bw, false,
&off_x, &off_y);
plot_ok &= scrollbar_redraw(bw->scroll_y,
res = scrollbar_redraw(bw->scroll_y,
x + off_x, y + off_y, clip,
bw->scale, &new_ctx);
if (res != NSERROR_OK) {
plot_ok = false;
}
}
}

283
desktop/scrollbar.c
View File

@ -46,37 +46,54 @@ struct scrollbar {
/** Length of the scrollbar widget */
int length;
int full_size; /* Length of the full scrollable area */
int visible_size; /* Length visible part of the scrollable area */
/** Length of the full scrollable area */
int full_size;
/** Length visible part of the scrollable area */
int visible_size;
int offset; /* Current scroll offset to visible area */
/** Current scroll offset to visible area */
int offset;
int bar_pos; /* Position of the scrollbar */
int bar_len; /* Length of the scrollbar */
/** Position of the scrollbar */
int bar_pos;
/** Length of the scrollbar */
int bar_len;
scrollbar_client_callback client_callback; /* Callback receiving
* scrollbar events */
void *client_data; /* User data passed to the callback */
/** Callback receiving scrollbar events */
scrollbar_client_callback client_callback;
/** User data passed to the callback */
void *client_data;
bool dragging; /* Flag indicating drag at progess */
int drag_start_coord; /* Coordinate value at drag start */
int drag_start_pos; /* Scrollbar offset or bar_pos at drag start */
bool drag_content; /* Flag indicating that the drag corresponds to
* a dragged content area, rather than a dragged
* scrollbar. */
/** Flag indicating drag at progess */
bool dragging;
/** Coordinate value at drag start */
int drag_start_coord;
/** Scrollbar offset or bar_pos at drag start */
int drag_start_pos;
/** Flag indicating that the drag corresponds to a dragged
* content area, rather than a dragged scrollbar.
*/
bool drag_content;
struct scrollbar *pair; /* Parpendicular scrollbar, or NULL */
bool pair_drag; /* Flag indicating that the current drag affects
the perpendicular scrollbar too */
/** Parpendicular scrollbar, or NULL */
struct scrollbar *pair;
/** Flag indicating that the current drag affects the
* perpendicular scrollbar too
*/
bool pair_drag;
};
/*
* Exported function. Documented in desktop/scrollbar.h
* Exported interface. Documented in desktop/scrollbar.h
*/
nserror scrollbar_create(bool horizontal, int length, int full_size,
int visible_size, void *client_data,
nserror
scrollbar_create(bool horizontal,
int length,
int full_size,
int visible_size,
void *client_data,
scrollbar_client_callback client_callback,
struct scrollbar **s)
{
@ -115,12 +132,13 @@ nserror scrollbar_create(bool horizontal, int length, int full_size,
/*
* Exported function. Documented in scrollbar.h
* Exported interface. Documented in scrollbar.h
*/
void scrollbar_destroy(struct scrollbar *s)
{
if (s->pair != NULL)
if (s->pair != NULL) {
s->pair->pair = NULL;
}
free(s);
}
@ -135,7 +153,6 @@ void scrollbar_destroy(struct scrollbar *s)
* \param inset true for inset outline, false for an outset one
* \return NSERROR_OK on success else error code
*/
static inline nserror
scrollbar_rectangle(const struct redraw_context *ctx,
struct rect *area,
@ -215,10 +232,13 @@ scrollbar_rectangle(const struct redraw_context *ctx,
/*
* Exported function. Documented in scrollbar.h
* Exported interface. Documented in scrollbar.h
*/
bool scrollbar_redraw(struct scrollbar *s, int x, int y,
const struct rect *clip, float scale,
nserror
scrollbar_redraw(struct scrollbar *s,
int x, int y,
const struct rect *clip,
float scale,
const struct redraw_context *ctx)
{
int w = SCROLLBAR_WIDTH;
@ -278,7 +298,7 @@ bool scrollbar_redraw(struct scrollbar *s, int x, int y,
(area.y1 < clip->y0) ||
(clip->x1 < area.x0) ||
(clip->y1 < area.y0)) {
return true;
return NSERROR_OK;
}
if (s->horizontal) {
@ -288,7 +308,7 @@ bool scrollbar_redraw(struct scrollbar *s, int x, int y,
res = scrollbar_rectangle(ctx, &area,
bg_fill_style.fill_colour, true);
if (res != NSERROR_OK) {
return false;
return res;
}
/* left arrow icon border */
@ -299,7 +319,7 @@ bool scrollbar_redraw(struct scrollbar *s, int x, int y,
res = scrollbar_rectangle(ctx, &rect,
fg_fill_style.fill_colour, false);
if (res != NSERROR_OK) {
return false;
return res;
}
/* left arrow icon background */
@ -309,7 +329,7 @@ bool scrollbar_redraw(struct scrollbar *s, int x, int y,
rect.y1 = area.y1 - 1;
res = ctx->plot->rectangle(ctx, &fg_fill_style, &rect);
if (res != NSERROR_OK) {
return false;
return res;
}
/* left arrow */
@ -321,7 +341,7 @@ bool scrollbar_redraw(struct scrollbar *s, int x, int y,
v[5] = area.y0 + w * 3 / 4;
res = ctx->plot->polygon(ctx, &arrow_fill_style, v, 3);
if (res != NSERROR_OK) {
return false;
return res;
}
/* scrollbar well background */
@ -331,7 +351,7 @@ bool scrollbar_redraw(struct scrollbar *s, int x, int y,
rect.y1 = area.y1;
res = ctx->plot->rectangle(ctx, &bg_fill_style, &rect);
if (res != NSERROR_OK) {
return false;
return res;
}
/* scrollbar position indicator bar */
@ -339,9 +359,10 @@ bool scrollbar_redraw(struct scrollbar *s, int x, int y,
rect.y0 = area.y0 + 1;
rect.x1 = bar_c1;
rect.y1 = area.y1 - 1;
res = scrollbar_rectangle(ctx, &rect, fg_fill_style.fill_colour, false);
res = scrollbar_rectangle(ctx, &rect,
fg_fill_style.fill_colour, false);
if (res != NSERROR_OK) {
return false;
return res;
}
rect.x0 = bar_c0 + 1;
@ -350,7 +371,7 @@ bool scrollbar_redraw(struct scrollbar *s, int x, int y,
rect.y1 = area.y1 - 1;
res = ctx->plot->rectangle(ctx, &fg_fill_style, &rect);
if (res != NSERROR_OK) {
return false;
return res;
}
/* right arrow icon border */
@ -358,9 +379,10 @@ bool scrollbar_redraw(struct scrollbar *s, int x, int y,
rect.y0 = area.y0 + 1;
rect.x1 = area.x1 - 1;
rect.y1 = area.y1 - 1;
res = scrollbar_rectangle(ctx, &rect, fg_fill_style.fill_colour, false);
res = scrollbar_rectangle(ctx, &rect,
fg_fill_style.fill_colour, false);
if (res != NSERROR_OK) {
return false;
return res;
}
/* right arrow icon background */
@ -370,7 +392,7 @@ bool scrollbar_redraw(struct scrollbar *s, int x, int y,
rect.y1 = area.y1 - 1;
res = ctx->plot->rectangle(ctx, &fg_fill_style, &rect);
if (res != NSERROR_OK) {
return false;
return res;
}
/* right arrow */
@ -382,15 +404,16 @@ bool scrollbar_redraw(struct scrollbar *s, int x, int y,
v[5] = rect.y0 + w * 3 / 4;
res = ctx->plot->polygon(ctx, &arrow_fill_style, v, 3);
if (res != NSERROR_OK) {
return false;
return res;
}
} else {
/* scrollbar is vertical */
/* outline */
res = scrollbar_rectangle(ctx, &area, bg_fill_style.fill_colour, true);
res = scrollbar_rectangle(ctx, &area,
bg_fill_style.fill_colour, true);
if (res != NSERROR_OK) {
return false;
return res;
}
/* top arrow border */
@ -398,9 +421,10 @@ bool scrollbar_redraw(struct scrollbar *s, int x, int y,
rect.y0 = area.y0 + 1;
rect.x1 = area.x1 - 1;
rect.y1 = area.y0 + w - 2;
res = scrollbar_rectangle(ctx, &rect, fg_fill_style.fill_colour, false);
res = scrollbar_rectangle(ctx, &rect,
fg_fill_style.fill_colour, false);
if (res != NSERROR_OK) {
return false;
return res;
}
/* top arrow background */
@ -410,7 +434,7 @@ bool scrollbar_redraw(struct scrollbar *s, int x, int y,
rect.y1 = area.y0 + w - 2;
res = ctx->plot->rectangle(ctx, &fg_fill_style, &rect);
if (res != NSERROR_OK) {
return false;
return res;
}
/* up arrow */
@ -422,7 +446,7 @@ bool scrollbar_redraw(struct scrollbar *s, int x, int y,
v[5] = area.y0 + w * 3 / 4;
res = ctx->plot->polygon(ctx, &arrow_fill_style, v, 3);
if (res != NSERROR_OK) {
return false;
return res;
}
/* scrollbar well background */
@ -432,7 +456,7 @@ bool scrollbar_redraw(struct scrollbar *s, int x, int y,
rect.y1 = area.y1 - w + 2;
res = ctx->plot->rectangle(ctx, &bg_fill_style, &rect);
if (res != NSERROR_OK) {
return false;
return res;
}
/* scrollbar position indicator bar */
@ -440,9 +464,10 @@ bool scrollbar_redraw(struct scrollbar *s, int x, int y,
rect.y0 = bar_c0;
rect.x1 = area.x1 - 1;
rect.y1 = bar_c1;
res = scrollbar_rectangle(ctx, &rect, fg_fill_style.fill_colour, false);
res = scrollbar_rectangle(ctx, &rect,
fg_fill_style.fill_colour, false);
if (res != NSERROR_OK) {
return false;
return res;
}
rect.x0 = area.x0 + 2;
@ -451,7 +476,7 @@ bool scrollbar_redraw(struct scrollbar *s, int x, int y,
rect.y1 = bar_c1;
res = ctx->plot->rectangle(ctx, &fg_fill_style, &rect);
if (res != NSERROR_OK) {
return false;
return res;
}
/* down arrow icon border */
@ -459,9 +484,10 @@ bool scrollbar_redraw(struct scrollbar *s, int x, int y,
rect.y0 = area.y1 - w + 2;
rect.x1 = area.x1 - 1;
rect.y1 = area.y1 - 1;
res = scrollbar_rectangle(ctx, &rect, fg_fill_style.fill_colour, false);
res = scrollbar_rectangle(ctx, &rect,
fg_fill_style.fill_colour, false);
if (res != NSERROR_OK) {
return false;
return res;
}
/* down arrow icon background */
@ -471,7 +497,7 @@ bool scrollbar_redraw(struct scrollbar *s, int x, int y,
rect.y1 = area.y1 - 1;
res = ctx->plot->rectangle(ctx, &fg_fill_style, &rect);
if (res != NSERROR_OK) {
return false;
return res;
}
/* down arrow */
@ -483,16 +509,16 @@ bool scrollbar_redraw(struct scrollbar *s, int x, int y,
v[5] = area.y1 - w * 3 / 4 + 1;
res = ctx->plot->polygon(ctx, &arrow_fill_style, v, 3);
if (res != NSERROR_OK) {
return false;
return res;
}
}
return true;
return NSERROR_OK;
}
/*
* Exported function. Documented in scrollbar.h
* Exported interface. Documented in scrollbar.h
*/
void scrollbar_set(struct scrollbar *s, int value, bool bar_pos)
{
@ -500,46 +526,49 @@ void scrollbar_set(struct scrollbar *s, int value, bool bar_pos)
int old_offset = s->offset;
struct scrollbar_msg_data msg;
if (value < 0)
if (value < 0) {
value = 0;
}
if (s->full_size == s->visible_size)
if (s->full_size == s->visible_size) {
return;
}
well_length = s->length - 2 * SCROLLBAR_WIDTH;
if (bar_pos) {
if (value > well_length - s->bar_len)
if (value > well_length - s->bar_len) {
s->bar_pos = well_length - s->bar_len;
else
} else {
s->bar_pos = value;
}
s->offset = ((well_length - s->bar_len) < 1) ? 0 :
(((s->full_size - s->visible_size) *
s->bar_pos) / (well_length - s->bar_len));
} else {
if (value > s->full_size - s->visible_size)
if (value > s->full_size - s->visible_size) {
s->offset = s->full_size - s->visible_size;
else
} else {
s->offset = value;
}
s->bar_pos = (s->full_size < 1) ? 0 :
((well_length * s->offset) / s->full_size);
}
if (s->offset == old_offset)
/* Nothing happened */
return;
if (s->offset != old_offset) {
/* client callback if there was a chnage */
msg.scrollbar = s;
msg.msg = SCROLLBAR_MSG_MOVED;
msg.scroll_offset = s->offset;
s->client_callback(s->client_data, &msg);
}
}
/*
* Exported function. Documented in scrollbar.h
* Exported interface. Documented in scrollbar.h
*/
bool scrollbar_scroll(struct scrollbar *s, int change)
{
@ -547,9 +576,10 @@ bool scrollbar_scroll(struct scrollbar *s, int change)
int old_offset = s->offset;
struct scrollbar_msg_data msg;
if (change == 0 || s->full_size <= s->visible_size)
if (change == 0 || s->full_size <= s->visible_size) {
/* zero scroll step, or unscrollable */
return false;
}
/* Convert named change values to appropriate pixel offset value */
switch (change) {
@ -575,16 +605,18 @@ bool scrollbar_scroll(struct scrollbar *s, int change)
}
/* Get new offset */
if (s->offset + change > s->full_size - s->visible_size)
if (s->offset + change > s->full_size - s->visible_size) {
s->offset = s->full_size - s->visible_size;
else if (s->offset + change < 0)
} else if (s->offset + change < 0) {
s->offset = 0;
else
} else {
s->offset += change;
}
if (s->offset == old_offset)
if (s->offset == old_offset) {
/* Nothing happened */
return false;
}
/* Update scrollbar */
well_length = s->length - 2 * SCROLLBAR_WIDTH;
@ -601,18 +633,19 @@ bool scrollbar_scroll(struct scrollbar *s, int change)
/*
* Exported function. Documented in scrollbar.h
* Exported interface. Documented in scrollbar.h
*/
int scrollbar_get_offset(struct scrollbar *s)
{
if (s == NULL)
if (s == NULL) {
return 0;
}
return s->offset;
}
/*
* Exported function. Documented in scrollbar.h
* Exported interface. Documented in scrollbar.h
*/
void scrollbar_set_extents(struct scrollbar *s, int length,
int visible_size, int full_size)
@ -621,21 +654,26 @@ void scrollbar_set_extents(struct scrollbar *s, int length,
int well_length;
struct scrollbar_msg_data msg;
if (length == s->length && visible_size == s->visible_size &&
if (length == s->length &&
visible_size == s->visible_size &&
full_size == s->full_size) {
/* Nothing's changed. */
return;
}
if (length != -1)
if (length != -1) {
s->length = length;
if (visible_size != -1)
}
if (visible_size != -1) {
s->visible_size = visible_size;
if (full_size != -1)
}
if (full_size != -1) {
s->full_size = full_size;
}
if (s->full_size < s->visible_size)
if (s->full_size < s->visible_size) {
s->full_size = s->visible_size;
}
/* Update scroll offset (scaled in proportion with change in excess) */
if (cur_excess <= 0) {
@ -662,7 +700,7 @@ void scrollbar_set_extents(struct scrollbar *s, int length,
/*
* Exported function. Documented in scrollbar.h
* Exported interface. Documented in scrollbar.h
*/
bool scrollbar_is_horizontal(struct scrollbar *s)
{
@ -680,9 +718,11 @@ bool scrollbar_is_horizontal(struct scrollbar *s)
* 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 *s, int x, int y,
bool content_drag, bool pair)
static void
scrollbar_drag_start_internal(struct scrollbar *s,
int x, int y,
bool content_drag,
bool pair)
{
struct scrollbar_msg_data msg;
@ -694,7 +734,7 @@ static void scrollbar_drag_start_internal(struct scrollbar *s, int x, int y,
msg.scrollbar = s;
/* \todo - some proper numbers please! */
/** \todo some proper numbers please! */
if (s->horizontal) {
msg.x0 = -2048;
msg.x1 = 2048;
@ -733,10 +773,12 @@ static void scrollbar_drag_start_internal(struct scrollbar *s, int x, int y,
/*
* Exported function. Documented in scrollbar.h
* Exported interface. Documented in scrollbar.h
*/
scrollbar_mouse_status scrollbar_mouse_action(struct scrollbar *s,
browser_mouse_state mouse, int x, int y)
scrollbar_mouse_status
scrollbar_mouse_action(struct scrollbar *s,
browser_mouse_state mouse,
int x, int y)
{
int x0, y0, x1, y1;
int val;
@ -768,24 +810,27 @@ scrollbar_mouse_status scrollbar_mouse_action(struct scrollbar *s,
}
if (h)
if (h) {
val = x;
else
} else {
val = y;
}
if (s->dragging) {
val -= s->drag_start_coord;
if (s->drag_content)
if (s->drag_content) {
val = -val;
if (val != 0)
}
if (val != 0) {
scrollbar_set(s, s->drag_start_pos + val,
!(s->drag_content));
}
if (s->pair_drag) {
scrollbar_mouse_action(s->pair, mouse, x, y);
status = SCROLLBAR_MOUSE_BOTH;
} else
} else {
status = h ? SCROLLBAR_MOUSE_HRZ : SCROLLBAR_MOUSE_VRT;
}
return status;
}
@ -793,42 +838,41 @@ scrollbar_mouse_status scrollbar_mouse_action(struct scrollbar *s,
/* left/up arrow */
status = h ? SCROLLBAR_MOUSE_LFT : SCROLLBAR_MOUSE_UP;
if (but1)
if (but1) {
scrollbar_set(s, s->offset - SCROLLBAR_WIDTH, false);
else if (but2)
} else if (but2) {
scrollbar_set(s, s->offset + SCROLLBAR_WIDTH, false);
}
} else if (val < SCROLLBAR_WIDTH + s->bar_pos) {
/* well between left/up arrow and bar */
status = h ? SCROLLBAR_MOUSE_PLFT : SCROLLBAR_MOUSE_PUP;
if (but1)
if (but1) {
scrollbar_set(s, s->offset - s->length, false);
else if (but2)
} else if (but2) {
scrollbar_set(s, s->offset + s->length, false);
}
} else if (val > s->length - SCROLLBAR_WIDTH) {
/* right/down arrow */
status = h ? SCROLLBAR_MOUSE_RGT : SCROLLBAR_MOUSE_DWN;
if (but1)
if (but1) {
scrollbar_set(s, s->offset + SCROLLBAR_WIDTH, false);
else if (but2)
} else if (but2) {
scrollbar_set(s, s->offset - SCROLLBAR_WIDTH, false);
} else if (val > SCROLLBAR_WIDTH + s->bar_pos +
s->bar_len) {
}
} else if (val > SCROLLBAR_WIDTH + s->bar_pos + s->bar_len) {
/* well between right/down arrow and bar */
status = h ? SCROLLBAR_MOUSE_PRGT : SCROLLBAR_MOUSE_PDWN;
if (but1)
if (but1) {
scrollbar_set(s, s->offset + s->length, false);
else if (but2)
} else if (but2) {
scrollbar_set(s, s->offset - s->length, false);
}
else {
} else {
/* scrollbar position indication bar */
status = h ? SCROLLBAR_MOUSE_HRZ : SCROLLBAR_MOUSE_VRT;
@ -838,18 +882,19 @@ scrollbar_mouse_status scrollbar_mouse_action(struct scrollbar *s,
if (mouse & (BROWSER_MOUSE_DRAG_1 | BROWSER_MOUSE_DRAG_2) &&
(val >= SCROLLBAR_WIDTH + s->bar_pos
&& val < SCROLLBAR_WIDTH + s->bar_pos +
s->bar_len))
s->bar_len)) {
/* The mouse event is a drag start on the scrollbar position
* indication bar. */
scrollbar_drag_start_internal(s, x, y, false,
(mouse & BROWSER_MOUSE_DRAG_2) ? true : false);
}
return status;
}
/*
* Exported function. Documented in scrollbar.h
* Exported interface. Documented in scrollbar.h
*/
const char *scrollbar_mouse_status_to_message(scrollbar_mouse_status status)
{
@ -893,7 +938,7 @@ const char *scrollbar_mouse_status_to_message(scrollbar_mouse_status status)
/*
* Exported function. Documented in scrollbar.h
* Exported interface. Documented in scrollbar.h
*/
void scrollbar_mouse_drag_end(struct scrollbar *s,
browser_mouse_state mouse, int x, int y)
@ -906,10 +951,12 @@ void scrollbar_mouse_drag_end(struct scrollbar *s,
drag_start_pos = s->drag_start_pos;
val = (s->horizontal ? x : y) - s->drag_start_coord;
if (s->drag_content)
if (s->drag_content) {
val = -val;
if (val != 0)
}
if (val != 0) {
scrollbar_set(s, drag_start_pos + val, !(s->drag_content));
}
s->dragging = false;
s->drag_content = false;
@ -920,11 +967,13 @@ void scrollbar_mouse_drag_end(struct scrollbar *s,
drag_start_pos = s->pair->drag_start_pos;
val = (s->pair->horizontal ? x : y) - s->pair->drag_start_coord;
if (s->pair->drag_content)
if (s->pair->drag_content) {
val = -val;
if (val != 0)
}
if (val != 0) {
scrollbar_set(s->pair, drag_start_pos + val,
!(s->pair->drag_content));
}
s->pair->dragging = false;
s->pair->drag_content = false;
@ -937,7 +986,7 @@ void scrollbar_mouse_drag_end(struct scrollbar *s,
/*
* Exported function. Documented in scrollbar.h
* Exported interface. Documented in scrollbar.h
*/
void scrollbar_start_content_drag(struct scrollbar *s, int x, int y)
{
@ -946,7 +995,7 @@ void scrollbar_start_content_drag(struct scrollbar *s, int x, int y)
/*
* Exported function. Documented in scrollbar.h
* Exported interface. Documented in scrollbar.h
*/
void scrollbar_make_pair(struct scrollbar *horizontal,
struct scrollbar *vertical)
@ -960,7 +1009,7 @@ void scrollbar_make_pair(struct scrollbar *horizontal,
/*
* Exported function. Documented in scrollbar.h
* Exported interface. Documented in scrollbar.h
*/
void *scrollbar_get_data(struct scrollbar *s)
{

68
desktop/scrollbar.h
View File

@ -16,12 +16,13 @@
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/** \file
* Scrollbar widget (interface).
/**
* \file
* Scrollbar widget interface.
*/
#ifndef _NETSURF_DESKTOP_SCROLLBAR_H_
#define _NETSURF_DESKTOP_SCROLLBAR_H_
#ifndef NETSURF_DESKTOP_SCROLLBAR_H
#define NETSURF_DESKTOP_SCROLLBAR_H
#include <stdbool.h>
#include <limits.h>
@ -36,16 +37,22 @@
struct scrollbar;
/**
* scrollbar message types
*/
typedef enum {
SCROLLBAR_MSG_MOVED, /* the scroll value has changed */
SCROLLBAR_MSG_SCROLL_START, /* a scrollbar drag has started, all
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_SCROLL_FINISHED, /**< cancel a scrollbar drag */
} scrollbar_msg;
/**
* scrollbar message context data
*/
struct scrollbar_msg_data {
struct scrollbar *scrollbar;
scrollbar_msg msg;
@ -53,6 +60,27 @@ struct scrollbar_msg_data {
int x0, y0, x1, y1;
};
/**
* Scrollbar mouse input status flags
*/
typedef enum {
SCROLLBAR_MOUSE_NONE = 0, /**< Not relevant */
SCROLLBAR_MOUSE_USED = (1 << 0), /**< Took action with input */
SCROLLBAR_MOUSE_BOTH = (1 << 1), /**< Scrolling both bars */
SCROLLBAR_MOUSE_UP = (1 << 2), /**< Hover: scroll up */
SCROLLBAR_MOUSE_PUP = (1 << 3), /**< Hover: scroll page up */
SCROLLBAR_MOUSE_VRT = (1 << 4), /**< Hover: vert. drag bar */
SCROLLBAR_MOUSE_PDWN = (1 << 5), /**< Hover: scroll page down */
SCROLLBAR_MOUSE_DWN = (1 << 6), /**< Hover: scroll down */
SCROLLBAR_MOUSE_LFT = (1 << 7), /**< Hover: scroll left */
SCROLLBAR_MOUSE_PLFT = (1 << 8), /**< Hover: scroll page left */
SCROLLBAR_MOUSE_HRZ = (1 << 9), /**< Hover: horiz. drag bar */
SCROLLBAR_MOUSE_PRGT = (1 << 10), /**< Hover: scroll page right */
SCROLLBAR_MOUSE_RGT = (1 << 11) /**< Hover: scroll right */
} scrollbar_mouse_status;
/**
* Client callback for the scrollbar.
*
@ -97,9 +125,9 @@ void scrollbar_destroy(struct scrollbar *s);
* \param clip the clipping rectangle
* \param scale scale for the redraw
* \param ctx current redraw context
* \return true on succes false otherwise
* \return NSERROR_OK on success otherwise error code
*/
bool scrollbar_redraw(struct scrollbar *s, int x, int y,
nserror scrollbar_redraw(struct scrollbar *s, int x, int y,
const struct rect *clip, float scale,
const struct redraw_context *ctx);
@ -150,22 +178,6 @@ void scrollbar_set_extents(struct scrollbar *s, int length,
*/
bool scrollbar_is_horizontal(struct scrollbar *s);
/* Scrollbar mouse input status flags */
typedef enum {
SCROLLBAR_MOUSE_NONE = 0, /**< Not relevant */
SCROLLBAR_MOUSE_USED = (1 << 0), /**< Took action with input */
SCROLLBAR_MOUSE_BOTH = (1 << 1), /**< Scrolling both bars */
SCROLLBAR_MOUSE_UP = (1 << 2), /**< Hover: scroll up */
SCROLLBAR_MOUSE_PUP = (1 << 3), /**< Hover: scroll page up */
SCROLLBAR_MOUSE_VRT = (1 << 4), /**< Hover: vert. drag bar */
SCROLLBAR_MOUSE_PDWN = (1 << 5), /**< Hover: scroll page down */
SCROLLBAR_MOUSE_DWN = (1 << 6), /**< Hover: scroll down */
SCROLLBAR_MOUSE_LFT = (1 << 7), /**< Hover: scroll left */
SCROLLBAR_MOUSE_PLFT = (1 << 8), /**< Hover: scroll page left */
SCROLLBAR_MOUSE_HRZ = (1 << 9), /**< Hover: horiz. drag bar */
SCROLLBAR_MOUSE_PRGT = (1 << 10), /**< Hover: scroll page right */
SCROLLBAR_MOUSE_RGT = (1 << 11) /**< Hover: scroll right */
} scrollbar_mouse_status;
/**
* Handle mouse actions other then drag ends.
@ -179,6 +191,7 @@ typedef enum {
scrollbar_mouse_status scrollbar_mouse_action(struct scrollbar *s,
browser_mouse_state mouse, int x, int y);
/**
* Get a status bar message from a scrollbar mouse input status.
*
@ -187,6 +200,7 @@ scrollbar_mouse_status scrollbar_mouse_action(struct scrollbar *s,
*/
const char *scrollbar_mouse_status_to_message(scrollbar_mouse_status status);
/**
* Handle end of mouse drags.
*
@ -198,8 +212,10 @@ const char *scrollbar_mouse_status_to_message(scrollbar_mouse_status status);
void scrollbar_mouse_drag_end(struct scrollbar *s,
browser_mouse_state mouse, int x, int y);
/**
* 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.
@ -210,6 +226,7 @@ void scrollbar_mouse_drag_end(struct scrollbar *s,
*/
void scrollbar_start_content_drag(struct scrollbar *s, int x, int y);
/**
* Connect a horizontal and a vertical scrollbar into a pair so that they
* co-operate during 2D drags.
@ -220,6 +237,7 @@ void scrollbar_start_content_drag(struct scrollbar *s, int x, int y);
void scrollbar_make_pair(struct scrollbar *horizontal,
struct scrollbar *vertical);
/**
* Get the scrollbar's client data
*

6
desktop/textarea.c
View File

@ -2392,19 +2392,21 @@ void textarea_redraw(struct textarea *ta, int x, int y, colour bg, float scale,
ctx->plot->clip(ctx, clip);
if (ta->bar_x != NULL)
if (ta->bar_x != NULL) {
scrollbar_redraw(ta->bar_x,
x / scale + ta->border_width,
y / scale + ta->vis_height - ta->border_width -
SCROLLBAR_WIDTH,
clip, scale, ctx);
}
if (ta->bar_y != NULL)
if (ta->bar_y != NULL) {
scrollbar_redraw(ta->bar_y,
x / scale + ta->vis_width - ta->border_width -
SCROLLBAR_WIDTH,
y / scale + ta->border_width,
clip, scale, ctx);
}
}

6
render/form.c
View File

@ -1298,11 +1298,13 @@ bool form_redraw_select_menu(struct form_control *control, int x, int y,
option = option->next;
}
if (!scrollbar_redraw(menu->scrollbar,
res = scrollbar_redraw(menu->scrollbar,
x_cp + menu->width - SCROLLBAR_WIDTH,
y_cp,
clip, scale, ctx))
clip, scale, ctx);
if (res != NSERROR_OK) {
return false;
}
return true;
}