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netsurf/gtk/gtk_treeview.c
Vincent Sanders 60c840628f Small refactor to change icon names to being passed in from frontends instead of core treeview globals 
svn path=/trunk/netsurf/; revision=11053
2010-12-14 00:18:24 +00:00

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/*
* Copyright 2004 Richard Wilson <not_ginger_matt@users.sourceforge.net>
* 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
* Generic tree handling (implementation).
*/
#include <assert.h>
#include <gdk/gdkkeysyms.h>
#include <gtk/gtk.h>
#include <stdio.h>
#include "desktop/tree.h"
#include "desktop/tree_url_node.h"
#include "desktop/plotters.h"
#include "gtk/gtk_gui.h"
#include "gtk/gtk_plotters.h"
#include "gtk/gtk_treeview.h"
#include "utils/log.h"
#include "utils/utils.h"
struct nsgtk_treeview {
GtkWindow *window;
GtkScrolledWindow *scrolled;
GtkDrawingArea *drawing_area;
int mouse_pressed_x;
int mouse_pressed_y;
browser_mouse_state mouse_state;
struct tree *tree;
};
const char tree_directory_icon_name[] = "directory.png";
const char tree_content_icon_name[] = "content.png";
void nsgtk_treeview_destroy(struct nsgtk_treeview *tv)
{
tree_delete(tv->tree);
gtk_widget_destroy(GTK_WIDGET(tv->window));
free(tv);
}
struct tree *nsgtk_treeview_get_tree(struct nsgtk_treeview *tv)
{
return tv->tree;
}
static void nsgtk_tree_redraw_request(int x, int y, int width, int height, void *data)
{
struct nsgtk_treeview *tw = data;
gtk_widget_queue_draw_area(GTK_WIDGET(tw->drawing_area),
x, y, width, height);
}
/**
* Updates the tree owner following a tree resize
*
* \param tree the tree to update the owner of
*/
static void nsgtk_tree_resized(struct tree *tree, int width, int height, void *data)
{
struct nsgtk_treeview *tw = data;
gtk_widget_set_size_request(GTK_WIDGET(tw->drawing_area),
width, height);
return;
}
/**
* Translates a content_type to the name of a respective icon
*
* \param content_type content type
* \param buffer buffer for the icon name
*/
void tree_icon_name_from_content_type(char *buffer, content_type type)
{
// TODO: design/acquire icons
switch (type) {
case CONTENT_HTML:
case CONTENT_TEXTPLAIN:
case CONTENT_CSS:
#if defined(WITH_MNG) || defined(WITH_PNG)
case CONTENT_PNG:
#endif
#ifdef WITH_MNG
case CONTENT_JNG:
case CONTENT_MNG:
#endif
#ifdef WITH_JPEG
case CONTENT_JPEG:
#endif
#ifdef WITH_GIF
case CONTENT_GIF:
#endif
#ifdef WITH_BMP
case CONTENT_BMP:
case CONTENT_ICO:
#endif
#ifdef WITH_SPRITE
case CONTENT_SPRITE:
#endif
#ifdef WITH_DRAW
case CONTENT_DRAW:
#endif
#ifdef WITH_ARTWORKS
case CONTENT_ARTWORKS:
#endif
#ifdef WITH_NS_SVG
case CONTENT_SVG:
#endif
default:
sprintf(buffer, tree_content_icon_name);
break;
}
}
/**
* Scrolls the tree to make an element visible
*
* \param y Y coordinate of the element
* \param height height of the element
* \param data user data assigned to the tree on tree creation
*/
static void nsgtk_tree_scroll_visible(int y, int height, void *data)
{
int y0, y1;
gdouble page;
struct nsgtk_treeview *tw = data;
GtkAdjustment *vadj = gtk_scrolled_window_get_vadjustment(tw->scrolled);
assert(vadj);
g_object_get(vadj, "page-size", &page, NULL);
y0 = (int)(gtk_adjustment_get_value(vadj));
y1 = y0 + page;
if ((y >= y0) && (y + height <= y1))
return;
if (y + height > y1)
y0 = y0 + (y + height - y1);
if (y < y0)
y0 = y;
gtk_adjustment_set_value(vadj, y0);
}
/**
* Retrieves the dimensions of the window with the tree
*
* \param data user data assigned to the tree on tree creation
* \param width will be updated to window width if not NULL
* \param height will be updated to window height if not NULL
*/
static void nsgtk_tree_get_window_dimensions(int *width, int *height, void *data)
{
struct nsgtk_treeview *tw = data;
GtkAdjustment *vadj;
GtkAdjustment *hadj;
gdouble page;
if (width != NULL) {
hadj = gtk_scrolled_window_get_hadjustment(tw->scrolled);
g_object_get(hadj, "page-size", &page, NULL);
*width = page;
}
if (height != NULL) {
vadj = gtk_scrolled_window_get_vadjustment(tw->scrolled);
g_object_get(vadj, "page-size", &page, NULL);
*height = page;
}
}
/* signal handler functions for a tree window */
gboolean nsgtk_tree_window_expose_event(GtkWidget *widget,
GdkEventExpose *event, gpointer g)
{
struct tree *tree = (struct tree *) g;
int x, y, width, height;
x = event->area.x;
y = event->area.y;
width = event->area.width;
height = event->area.height;
current_widget = widget;
current_drawable = widget->window;
current_gc = gdk_gc_new(current_drawable);
#ifdef CAIRO_VERSION
current_cr = gdk_cairo_create(current_drawable);
#endif
plot = nsgtk_plotters;
nsgtk_plot_set_scale(1.0);current_widget = widget;
current_drawable = widget->window;
current_gc = gdk_gc_new(current_drawable);
#ifdef CAIRO_VERSION
current_cr = gdk_cairo_create(current_drawable);
#endif
plot = nsgtk_plotters;
nsgtk_plot_set_scale(1.0);
tree_set_redraw(tree, true);
tree_draw(tree, 0, 0, x, y, width, height);
current_widget = NULL;
g_object_unref(current_gc);
#ifdef CAIRO_VERSION
cairo_destroy(current_cr);
#endif
return FALSE;
}
void nsgtk_tree_window_hide(GtkWidget *widget, gpointer g)
{
struct nsgtk_treeview *tw = g;
struct tree *tree = tw->tree;
if (tree != NULL)
tree_set_redraw(tree, false);
}
gboolean nsgtk_tree_window_button_press_event(GtkWidget *widget,
GdkEventButton *event, gpointer g)
{
struct nsgtk_treeview *tw = g;
struct tree *tree = tw->tree;
gtk_widget_grab_focus(GTK_WIDGET(tw->drawing_area));
tw->mouse_pressed_x = event->x;
tw->mouse_pressed_y = event->y;
if (event->type == GDK_2BUTTON_PRESS)
tw->mouse_state = BROWSER_MOUSE_DOUBLE_CLICK;
switch (event->button) {
case 1: tw->mouse_state |= BROWSER_MOUSE_PRESS_1; break;
case 3: tw->mouse_state |= BROWSER_MOUSE_PRESS_2; break;
}
/* Handle the modifiers too */
if (event->state & GDK_SHIFT_MASK)
tw->mouse_state |= BROWSER_MOUSE_MOD_1;
if (event->state & GDK_CONTROL_MASK)
tw->mouse_state |= BROWSER_MOUSE_MOD_2;
if (event->state & GDK_MOD1_MASK)
tw->mouse_state |= BROWSER_MOUSE_MOD_3;
tree_mouse_action(tree, tw->mouse_state, event->x, event->y);
return TRUE;
}
gboolean nsgtk_tree_window_button_release_event(GtkWidget *widget,
GdkEventButton *event, gpointer g)
{
bool shift = event->state & GDK_SHIFT_MASK;
bool ctrl = event->state & GDK_CONTROL_MASK;
bool alt = event->state & GDK_MOD1_MASK;
struct nsgtk_treeview *tw = (struct nsgtk_treeview *) g;
struct tree *tree = tw->tree;
/* We consider only button 1 clicks as double clicks.
* If the mouse state is PRESS then we are waiting for a release to emit
* a click event, otherwise just reset the state to nothing*/
if (tw->mouse_state & BROWSER_MOUSE_DOUBLE_CLICK) {
if (tw->mouse_state & BROWSER_MOUSE_PRESS_1)
tw->mouse_state ^= BROWSER_MOUSE_PRESS_1;
else if (tw->mouse_state & BROWSER_MOUSE_PRESS_2)
tw->mouse_state ^= (BROWSER_MOUSE_PRESS_2 |
BROWSER_MOUSE_DOUBLE_CLICK);
} else if (tw->mouse_state & BROWSER_MOUSE_PRESS_1)
tw->mouse_state ^=
(BROWSER_MOUSE_PRESS_1 | BROWSER_MOUSE_CLICK_1);
else if (tw->mouse_state & BROWSER_MOUSE_PRESS_2)
tw->mouse_state ^= (BROWSER_MOUSE_PRESS_2 |
BROWSER_MOUSE_CLICK_2);
/* Handle modifiers being removed */
if (tw->mouse_state & BROWSER_MOUSE_MOD_1 && !shift)
tw->mouse_state ^= BROWSER_MOUSE_MOD_1;
if (tw->mouse_state & BROWSER_MOUSE_MOD_2 && !ctrl)
tw->mouse_state ^= BROWSER_MOUSE_MOD_2;
if (tw->mouse_state & BROWSER_MOUSE_MOD_3 && !alt)
tw->mouse_state ^= BROWSER_MOUSE_MOD_3;
if (tw->mouse_state &
(BROWSER_MOUSE_CLICK_1 | BROWSER_MOUSE_CLICK_2
| BROWSER_MOUSE_DOUBLE_CLICK))
tree_mouse_action(tree, tw->mouse_state,
event->x, event->y);
else
tree_drag_end(tree, tw->mouse_state,
tw->mouse_pressed_x,
tw->mouse_pressed_y,
event->x, event->y);
tw->mouse_state = 0;
return TRUE;
}
gboolean nsgtk_tree_window_motion_notify_event(GtkWidget *widget,
GdkEventButton *event, gpointer g)
{
bool shift = event->state & GDK_SHIFT_MASK;
bool ctrl = event->state & GDK_CONTROL_MASK;
bool alt = event->state & GDK_MOD1_MASK;
struct nsgtk_treeview *tw = (struct nsgtk_treeview *) g;
struct tree *tree = tw->tree;
/* Handle modifiers being removed */
if (tw->mouse_state & BROWSER_MOUSE_MOD_1 && !shift)
tw->mouse_state ^= BROWSER_MOUSE_MOD_1;
if (tw->mouse_state & BROWSER_MOUSE_MOD_2 && !ctrl)
tw->mouse_state ^= BROWSER_MOUSE_MOD_2;
if (tw->mouse_state & BROWSER_MOUSE_MOD_3 && !alt)
tw->mouse_state ^= BROWSER_MOUSE_MOD_3;
if (tw->mouse_state & BROWSER_MOUSE_PRESS_1) {
/* Start button 1 drag */
tree_mouse_action(tree, BROWSER_MOUSE_DRAG_1,
tw->mouse_pressed_x, tw->mouse_pressed_y);
/* Replace PRESS with HOLDING and declare drag in progress */
tw->mouse_state ^= (BROWSER_MOUSE_PRESS_1 |
BROWSER_MOUSE_HOLDING_1);
tw->mouse_state |= BROWSER_MOUSE_DRAG_ON;
return TRUE;
}
else if (tw->mouse_state & BROWSER_MOUSE_PRESS_2){
/* Start button 2s drag */
tree_mouse_action(tree, BROWSER_MOUSE_DRAG_2,
tw->mouse_pressed_x, tw->mouse_pressed_y);
/* Replace PRESS with HOLDING and declare drag in progress */
tw->mouse_state ^= (BROWSER_MOUSE_PRESS_2 |
BROWSER_MOUSE_HOLDING_2);
tw->mouse_state |= BROWSER_MOUSE_DRAG_ON;
return TRUE;
}
if (tw->mouse_state & (BROWSER_MOUSE_HOLDING_1 |
BROWSER_MOUSE_HOLDING_2))
tree_mouse_action(tree, tw->mouse_state, event->x,
event->y);
return TRUE;
}
gboolean nsgtk_tree_window_keypress_event(GtkWidget *widget, GdkEventKey *event,
gpointer g)
{
struct nsgtk_treeview *tw = (struct nsgtk_treeview *) g;
struct tree *tree = tw->tree;
uint32_t nskey;
double value;
GtkAdjustment *vscroll;
GtkAdjustment *hscroll;
GtkAdjustment *scroll = NULL;
gdouble hpage, vpage;
bool edited;
nskey = gtk_gui_gdkkey_to_nskey(event);
vscroll = gtk_scrolled_window_get_vadjustment(tw->scrolled);
hscroll = gtk_scrolled_window_get_hadjustment(tw->scrolled);
g_object_get(vscroll, "page-size", &vpage, NULL);
g_object_get(hscroll, "page-size", &hpage, NULL);
edited = tree_is_edited(tree);
switch (event->keyval) {
case GDK_Home:
case GDK_KP_Home:
if (edited)
break;
scroll = vscroll;
value = scroll->lower;
break;
case GDK_End:
case GDK_KP_End:
if (edited)
break;
scroll = vscroll;
value = scroll->upper - vpage;
if (value < scroll->lower)
value = scroll->lower;
break;
case GDK_Left:
case GDK_KP_Left:
if (edited)
break;
scroll = hscroll;
value = gtk_adjustment_get_value(scroll) -
scroll->step_increment;
if (value < scroll->lower)
value = scroll->lower;
break;
case GDK_Up:
case GDK_KP_Up:
scroll = vscroll;
value = gtk_adjustment_get_value(scroll) -
scroll->step_increment;
if (value < scroll->lower)
value = scroll->lower;
break;
case GDK_Right:
case GDK_KP_Right:
if (edited)
break;
scroll = hscroll;
value = gtk_adjustment_get_value(scroll) +
scroll->step_increment;
if (value > scroll->upper - hpage)
value = scroll->upper - hpage;
break;
case GDK_Down:
case GDK_KP_Down:
scroll = vscroll;
value = gtk_adjustment_get_value(scroll) +
scroll->step_increment;
if (value > scroll->upper - vpage)
value = scroll->upper - vpage;
break;
case GDK_Page_Up:
case GDK_KP_Page_Up:
scroll = vscroll;
value = gtk_adjustment_get_value(scroll) -
scroll->page_increment;
if (value < scroll->lower)
value = scroll->lower;
break;
case GDK_Page_Down:
case GDK_KP_Page_Down:
scroll = vscroll;
value = gtk_adjustment_get_value(scroll) +
scroll->page_increment;
if (value > scroll->upper - vpage)
value = scroll->upper - vpage;
break;
default:
tree_keypress(tree, nskey);
return TRUE;
}
if (scroll != NULL)
gtk_adjustment_set_value(scroll, value);
tree_keypress(tree, nskey);
return TRUE;
}
static const struct treeview_table nsgtk_tree_callbacks = {
.redraw_request = nsgtk_tree_redraw_request,
.resized = nsgtk_tree_resized,
.scroll_visible = nsgtk_tree_scroll_visible,
.get_window_dimensions = nsgtk_tree_get_window_dimensions
};
struct nsgtk_treeview *nsgtk_treeview_create(unsigned int flags,
GtkWindow *window, GtkScrolledWindow *scrolled,
GtkDrawingArea *drawing_area)
{
struct nsgtk_treeview *tv;
tv = malloc(sizeof(struct nsgtk_treeview));
if (tv == NULL) {
LOG(("malloc failed"));
warn_user("NoMemory", 0);
return NULL;
}
tv->window = window;
tv->scrolled = scrolled;
tv->drawing_area = drawing_area;
tv->tree = tree_create(flags, &nsgtk_tree_callbacks, tv);
tv->mouse_state = 0;
gtk_widget_modify_bg(GTK_WIDGET(drawing_area), GTK_STATE_NORMAL,
&((GdkColor) { 0, 0xffff, 0xffff, 0xffff } ));
#define CONNECT(obj, sig, callback, ptr) \
g_signal_connect(G_OBJECT(obj), (sig), G_CALLBACK(callback), (ptr))
CONNECT(drawing_area, "expose_event",
nsgtk_tree_window_expose_event,
tv->tree);
CONNECT(drawing_area, "button_press_event",
nsgtk_tree_window_button_press_event,
tv);
CONNECT(drawing_area, "button_release_event",
nsgtk_tree_window_button_release_event,
tv);
CONNECT(drawing_area, "motion_notify_event",
nsgtk_tree_window_motion_notify_event,
tv);
CONNECT(drawing_area, "key_press_event",
nsgtk_tree_window_keypress_event,
tv);
return tv;
}
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