mirror of https://github.com/GNOME/gimp.git
379 lines
9.2 KiB
C
379 lines
9.2 KiB
C
/* The GIMP -- an image manipulation program
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <stdlib.h>
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#include "gdk/gdkkeysyms.h"
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#include "appenv.h"
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#include "colormaps.h"
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#include "cursorutil.h"
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#include "disp_callbacks.h"
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#include "gdisplay.h"
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#include "general.h"
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#include "gimprc.h"
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#include "interface.h"
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#include "layer_select.h"
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#include "move.h"
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#include "scale.h"
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#include "scroll.h"
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#include "tools.h"
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#include "gimage.h"
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#define HORIZONTAL 1
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#define VERTICAL 2
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static void
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redraw (GDisplay *gdisp,
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int x,
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int y,
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int w,
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int h)
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{
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long x1, y1, x2, y2; /* coordinate of rectangle corners */
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x1 = x;
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y1 = y;
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x2 = (x+w);
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y2 = (y+h);
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x1 = BOUNDS (x1, 0, gdisp->disp_width);
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y1 = BOUNDS (y1, 0, gdisp->disp_height);
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x2 = BOUNDS (x2, 0, gdisp->disp_width);
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y2 = BOUNDS (y2, 0, gdisp->disp_height);
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if ((x2 - x1) && (y2 - y1))
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{
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gdisplay_expose_area (gdisp, x1, y1, (x2 - x1), (y2 - y1));
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gdisplays_flush ();
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}
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}
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gint
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gdisplay_canvas_events (GtkWidget *canvas,
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GdkEvent *event)
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{
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GDisplay *gdisp;
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GdkEventExpose *eevent;
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GdkEventMotion *mevent;
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GdkEventButton *bevent;
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GdkEventKey *kevent;
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gint tx, ty;
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GdkModifierType tmask;
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guint state = 0;
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gint return_val = FALSE;
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gdisp = (GDisplay *) gtk_object_get_user_data (GTK_OBJECT (canvas));
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if (!canvas->window)
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return FALSE;
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/* If this is the first event... */
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if (!gdisp->select)
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{
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/* create the selection object */
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gdisp->select = selection_create (gdisp->canvas->window, gdisp,
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gdisp->gimage->height,
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gdisp->gimage->width, marching_speed);
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gdisp->disp_width = gdisp->canvas->allocation.width;
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gdisp->disp_height = gdisp->canvas->allocation.height;
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/* create GC for scrolling */
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gdisp->scroll_gc = gdk_gc_new (gdisp->canvas->window);
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gdk_gc_set_exposures (gdisp->scroll_gc, TRUE);
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/* set up the scrollbar observers */
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gtk_signal_connect (GTK_OBJECT (gdisp->hsbdata), "value_changed",
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(GtkSignalFunc) scrollbar_horz_update,
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gdisp);
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gtk_signal_connect (GTK_OBJECT (gdisp->vsbdata), "value_changed",
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(GtkSignalFunc) scrollbar_vert_update,
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gdisp);
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/* setup scale properly */
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setup_scale (gdisp);
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}
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/* get the pointer position */
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gdk_window_get_pointer (canvas->window, &tx, &ty, &tmask);
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switch (event->type)
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{
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case GDK_EXPOSE:
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eevent = (GdkEventExpose *) event;
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redraw (gdisp, eevent->area.x, eevent->area.y,
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eevent->area.width, eevent->area.height);
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break;
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case GDK_CONFIGURE:
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if ((gdisp->disp_width != gdisp->canvas->allocation.width) ||
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(gdisp->disp_height != gdisp->canvas->allocation.height))
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{
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gdisp->disp_width = gdisp->canvas->allocation.width;
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gdisp->disp_height = gdisp->canvas->allocation.height;
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resize_display (gdisp, 0, FALSE);
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}
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break;
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case GDK_BUTTON_PRESS:
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bevent = (GdkEventButton *) event;
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state = bevent->state;
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switch (bevent->button)
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{
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case 1:
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gtk_grab_add (canvas);
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if (!active_tool)
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active_tool_control (RECREATE, gdisp);
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if (active_tool && ((active_tool->type == MOVE) ||
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!gimage_is_empty (gdisp->gimage)))
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{
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if (active_tool->auto_snap_to)
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{
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gdisplay_snap_point (gdisp, bevent->x, bevent->y, &tx, &ty);
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bevent->x = tx;
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bevent->y = ty;
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}
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if (gimage_get_active_layer (gdisp->gimage) != active_tool_layer)
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{
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active_tool_control (RECREATE, gdisp);
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active_tool_layer = gimage_get_active_layer (gdisp->gimage);
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}
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(* active_tool->button_press_func) (active_tool, bevent, gdisp);
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}
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break;
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case 2:
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gtk_grab_add (canvas);
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start_grab_and_scroll (gdisp, bevent);
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break;
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case 3:
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popup_shell = gdisp->shell;
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gdisplay_set_menu_sensitivity (gdisp);
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gtk_menu_popup (GTK_MENU (gdisp->popup), NULL, NULL, NULL, NULL, 3, bevent->time);
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break;
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default:
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break;
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}
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break;
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case GDK_BUTTON_RELEASE:
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bevent = (GdkEventButton *) event;
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state = bevent->state;
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switch (bevent->button)
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{
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case 1:
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gtk_grab_remove (canvas);
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if (active_tool && ((active_tool->type == MOVE) ||
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!gimage_is_empty (gdisp->gimage)))
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if (active_tool->state == ACTIVE)
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{
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if (active_tool->auto_snap_to)
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{
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gdisplay_snap_point (gdisp, bevent->x, bevent->y, &tx, &ty);
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bevent->x = tx;
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bevent->y = ty;
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}
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(* active_tool->button_release_func) (active_tool, bevent, gdisp);
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}
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break;
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case 2:
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gtk_grab_remove (canvas);
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end_grab_and_scroll (gdisp, bevent);
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break;
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case 3:
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break;
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default:
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break;
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}
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break;
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case GDK_MOTION_NOTIFY:
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mevent = (GdkEventMotion *) event;
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state = mevent->state;
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if (mevent->is_hint)
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{
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mevent->x = tx;
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mevent->y = ty;
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mevent->state = tmask;
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}
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if (active_tool && ((active_tool->type == MOVE) ||
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!gimage_is_empty (gdisp->gimage)) &&
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(mevent->state & GDK_BUTTON1_MASK))
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{
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if (active_tool->state == ACTIVE)
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{
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/* if the first mouse button is down, check for automatic
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* scrolling...
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*/
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if ((mevent->state & Button1Mask) && !active_tool->scroll_lock)
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{
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if (mevent->x < 0 || mevent->y < 0 ||
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mevent->x > gdisp->disp_width ||
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mevent->y > gdisp->disp_height)
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scroll_to_pointer_position (gdisp, mevent);
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}
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if (active_tool->auto_snap_to)
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{
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gdisplay_snap_point (gdisp, mevent->x, mevent->y, &tx, &ty);
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mevent->x = tx;
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mevent->y = ty;
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}
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(* active_tool->motion_func) (active_tool, mevent, gdisp);
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}
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}
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else if (mevent->state & GDK_BUTTON2_MASK)
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{
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grab_and_scroll (gdisp, mevent);
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}
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break;
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case GDK_KEY_PRESS:
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kevent = (GdkEventKey *) event;
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state = kevent->state;
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switch (kevent->keyval)
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{
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case GDK_Left: case GDK_Right:
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case GDK_Up: case GDK_Down:
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if (active_tool && !gimage_is_empty (gdisp->gimage))
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(* active_tool->arrow_keys_func) (active_tool, kevent, gdisp);
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return_val = TRUE;
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break;
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case GDK_Tab:
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if (kevent->state & GDK_MOD1_MASK && !gimage_is_empty (gdisp->gimage))
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layer_select_init (gdisp->gimage, 1, kevent->time);
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if (kevent->state & GDK_CONTROL_MASK && !gimage_is_empty (gdisp->gimage))
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layer_select_init (gdisp->gimage, -1, kevent->time);
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return_val = TRUE;
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break;
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/* Update the state based on modifiers being pressed */
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case GDK_Alt_L: case GDK_Alt_R:
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state |= GDK_MOD1_MASK;
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break;
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case GDK_Shift_L: case GDK_Shift_R:
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state |= GDK_SHIFT_MASK;
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break;
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case GDK_Control_L: case GDK_Control_R:
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state |= GDK_CONTROL_MASK;
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break;
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}
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/* We need this here in case of accelerators */
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gdisplay_set_menu_sensitivity (gdisp);
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break;
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case GDK_KEY_RELEASE:
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kevent = (GdkEventKey *) event;
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state = kevent->state;
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switch (kevent->keyval)
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{
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case GDK_Alt_L: case GDK_Alt_R:
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state &= ~GDK_MOD1_MASK;
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break;
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case GDK_Shift_L: case GDK_Shift_R:
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kevent->state &= ~GDK_SHIFT_MASK;
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break;
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case GDK_Control_L: case GDK_Control_R:
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kevent->state &= ~GDK_CONTROL_MASK;
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break;
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}
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return_val = TRUE;
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break;
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default:
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break;
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}
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if (no_cursor_updating == 0)
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{
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if (active_tool && !gimage_is_empty (gdisp->gimage) &&
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!(state & (GDK_BUTTON1_MASK | GDK_BUTTON2_MASK | GDK_BUTTON3_MASK)))
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{
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GdkEventMotion me;
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me.x = tx; me.y = ty;
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me.state = state;
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(* active_tool->cursor_update_func) (active_tool, &me, gdisp);
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}
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else if (gimage_is_empty (gdisp->gimage))
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gdisplay_install_tool_cursor (gdisp, GDK_TOP_LEFT_ARROW);
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}
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return return_val;
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}
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gint
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gdisplay_hruler_button_press (GtkWidget *widget,
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GdkEventButton *event,
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gpointer data)
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{
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GDisplay *gdisp;
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if (event->button == 1)
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{
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gdisp = data;
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if (!active_tool)
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active_tool_control (RECREATE, gdisp);
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gtk_widget_activate (tool_widgets[tool_info[(int) MOVE].toolbar_position]);
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move_tool_start_hguide (active_tool, gdisp);
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gtk_grab_add (gdisp->canvas);
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}
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return FALSE;
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}
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gint
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gdisplay_vruler_button_press (GtkWidget *widget,
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GdkEventButton *event,
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gpointer data)
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{
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GDisplay *gdisp;
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if (event->button == 1)
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{
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gdisp = data;
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if (!active_tool)
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active_tool_control (RECREATE, gdisp);
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gtk_widget_activate (tool_widgets[tool_info[(int) MOVE].toolbar_position]);
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move_tool_start_vguide (active_tool, gdisp);
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gtk_grab_add (gdisp->canvas);
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}
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return FALSE;
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}
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