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c46bdc37f0
2001-02-03 Michael Natterer <mitch@gimp.org> * app/Makefile.am * app/gimpset.[ch]: removed. * app/gimpcontainer.[ch]: some minor fixes, cleanup. * app/context_manager.[ch]: made the "image_context" a GimpContainer and moved it here... * app/appenv.h * app/main.c: ...from here. * app/app_procs.c * app/colormap_dialog.[ch] * app/commands.c * app/gimage.c * app/gimpcontext.c * app/gimpimage.c * app/info_window.c * app/lc_dialog.c * app/lut_funcs.c * app/module_db.c * app/nav_window.c * app/palette_import.c * app/paths_dialog.c * app/pixel_region.c * app/scale.c * app/scroll.c * app/selection.c * app/temp_buf.c * app/undo.c * app/pdb/procedural_db.c * app/tools/by_color_select.c * app/tools/clone.c * app/tools/color_balance.c * app/tools/color_picker.c * app/tools/convolve.c * app/tools/crop.c * app/tools/curves.c * app/tools/paint_core.c * app/tools/transform_core.c: s/GimpSet/GimpContainer/g, removed many useless #include "appenv.h". * app/gimpdrawablepreview.c * app/gdisplay.c: found two badly crashing bugs i have introduced with my last changes here.
244 lines
5.8 KiB
C
244 lines
5.8 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include "config.h"
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#include <stdlib.h>
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#include <gtk/gtk.h>
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#include "apptypes.h"
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#include "cursorutil.h"
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#include "gdisplay.h"
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#include "scale.h"
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#include "scroll.h"
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#include "nav_window.h"
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#include "tools/tools.h"
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/* This is the delay before dithering begins
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* for example, after an operation such as scrolling
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*/
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#define DITHER_DELAY 250 /* milliseconds */
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/* STATIC variables */
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/* These are the values of the initial pointer grab */
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static gint startx, starty;
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gboolean
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scrollbar_vert_update (GtkAdjustment *adjustment,
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gpointer data)
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{
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GDisplay *gdisp;
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gdisp = (GDisplay *) data;
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scroll_display (gdisp, 0, (adjustment->value - gdisp->offset_y));
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return FALSE;
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}
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gboolean
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scrollbar_horz_update (GtkAdjustment *adjustment,
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gpointer data)
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{
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GDisplay *gdisp;
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gdisp = (GDisplay *) data;
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scroll_display (gdisp, (adjustment->value - gdisp->offset_x), 0);
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return FALSE;
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}
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void
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start_grab_and_scroll (GDisplay *gdisp,
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GdkEventButton *bevent)
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{
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startx = bevent->x + gdisp->offset_x;
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starty = bevent->y + gdisp->offset_y;
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change_win_cursor (gdisp->canvas->window, GDK_FLEUR,
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TOOL_TYPE_NONE, CURSOR_MODIFIER_NONE, FALSE);
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}
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void
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end_grab_and_scroll (GDisplay *gdisp,
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GdkEventButton *bevent)
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{
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gdisplay_real_install_tool_cursor (gdisp,
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gdisp->current_cursor,
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gdisp->cursor_tool,
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CURSOR_MODIFIER_NONE,
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FALSE,
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TRUE);
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}
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void
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grab_and_scroll (GDisplay *gdisp,
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GdkEventMotion *mevent)
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{
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if (mevent && mevent->window != gdisp->canvas->window)
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return;
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scroll_display (gdisp,
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startx - mevent->x - gdisp->offset_x,
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starty - mevent->y - gdisp->offset_y);
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}
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void
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scroll_to_pointer_position (GDisplay *gdisp,
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GdkEventMotion *mevent)
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{
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gdouble child_x, child_y;
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gint off_x, off_y;
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off_x = off_y = 0;
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/* The cases for scrolling */
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if (mevent->x < 0)
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off_x = mevent->x;
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else if (mevent->x > gdisp->disp_width)
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off_x = mevent->x - gdisp->disp_width;
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if (mevent->y < 0)
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off_y = mevent->y;
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else if (mevent->y > gdisp->disp_height)
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off_y = mevent->y - gdisp->disp_height;
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if (scroll_display (gdisp, off_x, off_y))
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{
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gdk_input_window_get_pointer (gdisp->canvas->window, mevent->deviceid,
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&child_x, &child_y,
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#ifdef GTK_HAVE_SIX_VALUATORS
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NULL, NULL, NULL, NULL, NULL);
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#else /* !GTK_HAVE_SIX_VALUATORS */
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NULL, NULL, NULL, NULL);
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#endif /* GTK_HAVE_SIX_VALUATORS */
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if (child_x == mevent->x && child_y == mevent->y)
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/* Put this event back on the queue -- so it keeps scrolling */
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gdk_event_put ((GdkEvent *) mevent);
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}
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}
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gboolean
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scroll_display (GDisplay *gdisp,
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gint x_offset,
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gint y_offset)
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{
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gint old_x, old_y;
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gint src_x, src_y;
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gint dest_x, dest_y;
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GdkEvent *event;
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old_x = gdisp->offset_x;
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old_y = gdisp->offset_y;
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gdisp->offset_x += x_offset;
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gdisp->offset_y += y_offset;
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bounds_checking (gdisp);
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/* the actual changes in offset */
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x_offset = (gdisp->offset_x - old_x);
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y_offset = (gdisp->offset_y - old_y);
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if (x_offset || y_offset)
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{
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setup_scale (gdisp);
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src_x = (x_offset < 0) ? 0 : x_offset;
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src_y = (y_offset < 0) ? 0 : y_offset;
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dest_x = (x_offset < 0) ? -x_offset : 0;
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dest_y = (y_offset < 0) ? -y_offset : 0;
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/* reset the old values so that the tool can accurately redraw */
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gdisp->offset_x = old_x;
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gdisp->offset_y = old_y;
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/* stop the currently active tool */
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active_tool_control (PAUSE, (void *) gdisp);
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/* set the offsets back to the new values */
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gdisp->offset_x += x_offset;
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gdisp->offset_y += y_offset;
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gdk_draw_pixmap (gdisp->canvas->window,
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gdisp->scroll_gc,
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gdisp->canvas->window,
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src_x, src_y,
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dest_x, dest_y,
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(gdisp->disp_width - abs (x_offset)),
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(gdisp->disp_height - abs (y_offset)));
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/* resume the currently active tool */
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active_tool_control (RESUME, (void *) gdisp);
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/* scale the image into the exposed regions */
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if (x_offset)
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{
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src_x = (x_offset < 0) ? 0 : gdisp->disp_width - x_offset;
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src_y = 0;
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gdisplay_expose_area (gdisp,
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src_x, src_y,
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abs (x_offset), gdisp->disp_height);
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}
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if (y_offset)
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{
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src_x = 0;
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src_y = (y_offset < 0) ? 0 : gdisp->disp_height - y_offset;
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gdisplay_expose_area (gdisp,
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src_x, src_y,
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gdisp->disp_width, abs (y_offset));
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}
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if (x_offset || y_offset)
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gdisplays_flush ();
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nav_window_update_window_marker(gdisp->window_nav_dialog);
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/* Make sure graphics expose events are processed before scrolling
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* again */
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while ((event = gdk_event_get_graphics_expose (gdisp->canvas->window))
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!= NULL)
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{
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gtk_widget_event (gdisp->canvas, event);
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if (event->expose.count == 0)
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{
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gdk_event_free (event);
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break;
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}
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gdk_event_free (event);
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}
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return TRUE;
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}
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return FALSE;
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}
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