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//
// gtkhelpers.h
// TikZiT
//
// Copyright 2010 Alex Merry. All rights reserved.
//
// Some code from Glade:
// Copyright 2001 Ximian, Inc.
//
// This file is part of TikZiT.
//
// TikZiT 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, either version 3 of the License, or
// (at your option) any later version.
//
// TikZiT 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 TikZiT. If not, see <http://www.gnu.org/licenses/>.
//
#import "gtkhelpers.h"
#import <gdk/gdkkeysyms.h>
NSString * gtk_editable_get_string (GtkEditable *editable, gint start, gint end)
{
gchar *text = gtk_editable_get_chars (editable, start, end);
NSString *string = [NSString stringWithUTF8String:text];
g_free (text);
return string;
}
GdkRectangle gdk_rectangle_from_ns_rect (NSRect box) {
GdkRectangle rect;
rect.x = box.origin.x;
rect.y = box.origin.y;
rect.width = box.size.width;
rect.height = box.size.height;
return rect;
}
NSRect gdk_rectangle_to_ns_rect (GdkRectangle rect) {
NSRect result;
result.origin.x = rect.x;
result.origin.y = rect.y;
result.size.width = rect.width;
result.size.height = rect.height;
return result;
}
void gtk_action_set_detailed_label (GtkAction *action, const gchar *baseLabel, const gchar *actionName) {
if (actionName == NULL || *actionName == '\0') {
gtk_action_set_label (action, baseLabel);
} else {
GString *label = g_string_sized_new (30);
g_string_printf(label, "%s: %s", baseLabel, actionName);
gtk_action_set_label (action, label->str);
g_string_free (label, TRUE);
}
}
/**
* tz_hijack_key_press:
* @win: a #GtkWindow
* event: the GdkEventKey
* user_data: unused
*
* This function is meant to be attached to key-press-event of a toplevel,
* it simply allows the window contents to treat key events /before/
* accelerator keys come into play (this way widgets dont get deleted
* when cutting text in an entry etc.).
*
* Returns: whether the event was handled
*/
gint
tz_hijack_key_press (GtkWindow *win,
GdkEventKey *event,
gpointer user_data)
{
GtkWidget *focus_widget;
focus_widget = gtk_window_get_focus (win);
if (focus_widget &&
(event->keyval == GDK_Delete || /* Filter Delete from accelerator keys */
((event->state & GDK_CONTROL_MASK) && /* CTRL keys... */
((event->keyval == GDK_c || event->keyval == GDK_C) || /* CTRL-C (copy) */
(event->keyval == GDK_x || event->keyval == GDK_X) || /* CTRL-X (cut) */
(event->keyval == GDK_v || event->keyval == GDK_V) || /* CTRL-V (paste) */
(event->keyval == GDK_a || event->keyval == GDK_A) || /* CTRL-A (select-all) */
(event->keyval == GDK_n || event->keyval == GDK_N))))) /* CTRL-N (new document) ?? */
{
return gtk_widget_event (focus_widget,
(GdkEvent *)event);
}
return FALSE;
}
GdkPixbuf * pixbuf_get_from_surface(cairo_surface_t *surface) {
cairo_surface_flush (surface);
int width = cairo_image_surface_get_width (surface);
int height = cairo_image_surface_get_height (surface);
int stride = cairo_image_surface_get_stride (surface);
unsigned char *data = cairo_image_surface_get_data (surface);
GdkPixbuf *pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB,
TRUE,
8,
width,
height);
unsigned char *pbdata = gdk_pixbuf_get_pixels (pixbuf);
int pbstride = gdk_pixbuf_get_rowstride (pixbuf);
for (int y = 0; y < height; ++y) {
uint32_t *line = (uint32_t*)(data + y*stride);
unsigned char *pbline = pbdata + (y*pbstride);
for (int x = 0; x < width; ++x) {
uint32_t pixel = *(line + x);
unsigned char *pbpixel = pbline + (x*4);
// NB: We should un-pre-mult the alpha here.
// However, in our world, alpha is always
// on or off, so it doesn't really matter
pbpixel[3] = ((pixel & 0xff000000) >> 24);
pbpixel[0] = ((pixel & 0x00ff0000) >> 16);
pbpixel[1] = ((pixel & 0x0000ff00) >> 8);
pbpixel[2] = (pixel & 0x000000ff);
}
}
return pixbuf;
}
// vim:ft=objc:ts=8:et:sts=4:sw=4
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