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Diffstat (limited to 'tikzit-1/src/gtk/gtkhelpers.m')
| -rw-r--r-- | tikzit-1/src/gtk/gtkhelpers.m | 275 |
1 files changed, 275 insertions, 0 deletions
diff --git a/tikzit-1/src/gtk/gtkhelpers.m b/tikzit-1/src/gtk/gtkhelpers.m new file mode 100644 index 0000000..9d26af5 --- /dev/null +++ b/tikzit-1/src/gtk/gtkhelpers.m @@ -0,0 +1,275 @@ +// +// 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> + +void release_obj (gpointer data) { + id obj = (id)data; + [obj release]; +} + +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; +} + +/* This function mostly lifted from + * gtk+/gdk/gdkscreen.c:gdk_screen_get_monitor_at_window() + */ +static gint +get_appropriate_monitor (GdkScreen *screen, + gint x, + gint y, + gint w, + gint h) +{ + GdkRectangle rect; + gint area = 0; + gint monitor = -1; + gint num_monitors; + gint i; + + rect.x = x; + rect.y = y; + rect.width = w; + rect.height = h; + + num_monitors = gdk_screen_get_n_monitors (screen); + + for (i = 0; i < num_monitors; i++) + { + GdkRectangle geometry; + + gdk_screen_get_monitor_geometry (screen, i, &geometry); + + if (gdk_rectangle_intersect (&rect, &geometry, &geometry) && + geometry.width * geometry.height > area) + { + area = geometry.width * geometry.height; + monitor = i; + } + } + + if (monitor >= 0) + return monitor; + else + return gdk_screen_get_monitor_at_point (screen, + rect.x + rect.width / 2, + rect.y + rect.height / 2); +} + +/* This function mostly lifted from gimp_session_info_apply_geometry + * in gimp-2.6/app/widgets/gimpsessioninfo.c + */ +void tz_restore_window (GtkWindow *window, gint x, gint y, gint w, gint h) +{ + gint forced_w = w; + gint forced_h = h; + if (w <= 0 || h <= 0) { + gtk_window_get_default_size (window, &w, &h); + } + if (w <= 0 || h <= 0) { + gtk_window_get_size (window, &w, &h); + } + + GdkScreen *screen = gtk_widget_get_screen (GTK_WIDGET (window)); + + gint monitor = 0; + if (w > 0 && h > 0) { + monitor = get_appropriate_monitor (screen, x, y, w, h); + } else { + monitor = gdk_screen_get_monitor_at_point (screen, x, y); + } + + GdkRectangle rect; + gdk_screen_get_monitor_geometry (screen, monitor, &rect); + + x = CLAMP (x, + rect.x, + rect.x + rect.width - (w > 0 ? w : 128)); + y = CLAMP (y, + rect.y, + rect.y + rect.height - (h > 0 ? h : 128)); + + gchar geom[32]; + g_snprintf (geom, sizeof (geom), "%+d%+d", x, y); + + gtk_window_parse_geometry (window, geom); + + if (forced_w > 0 && forced_h > 0) { + gtk_window_set_default_size (window, forced_w, forced_h); + } +} + +void label_set_bold (GtkLabel *label) { + PangoAttrList *attrs = pango_attr_list_new (); + pango_attr_list_insert (attrs, + pango_attr_weight_new (PANGO_WEIGHT_SEMIBOLD)); + gtk_label_set_attributes (label, attrs); + pango_attr_list_unref (attrs); +} + +void widget_set_error (GtkWidget *widget) { + GdkColor color = {0, 65535, 61184, 61184}; + gtk_widget_modify_base (widget, GTK_STATE_NORMAL, &color); +} + +void widget_clear_error (GtkWidget *widget) { + gtk_widget_modify_base (widget, GTK_STATE_NORMAL, NULL); +} + +void text_buffer_clear_tag (GtkTextBuffer *buffer, GtkTextTag *tag) { + GtkTextIter start; + GtkTextIter end; + gtk_text_buffer_get_start_iter (buffer, &start); + gtk_text_buffer_get_end_iter (buffer, &end); + gtk_text_buffer_remove_tag (buffer, tag, &start, &end); +} + +void utility_window_attach (GtkWindow *util_win, GtkWindow *parent_win) { + if (parent_win == gtk_window_get_transient_for (util_win)) + return; + + // HACK: X window managers tend to move windows around when they are + // unmapped and mapped again, so we save the position + gint x, y; + gtk_window_get_position (util_win, &x, &y); + + // HACK: Altering WM_TRANSIENT_FOR on a non-hidden but unmapped window + // (eg: when you have minimised the original parent window) can + // cause the window to be lost forever, so we hide it first + gtk_widget_hide (GTK_WIDGET (util_win)); + gtk_window_set_focus_on_map (util_win, FALSE); + gtk_window_set_transient_for (util_win, parent_win); + gtk_widget_show (GTK_WIDGET (util_win)); + + // HACK: see above + gtk_window_move (util_win, x, y); +} + +// vim:ft=objc:ts=8:et:sts=4:sw=4 |