gimp/app/display/gimpdisplayshell-cursor.c

296 lines
9.1 KiB
C

/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* This program 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.
*
* This program 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 <https://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <gegl.h>
#include <gtk/gtk.h>
#include "display-types.h"
#include "config/gimpguiconfig.h"
#include "core/gimpimage.h"
#include "widgets/gimpcursor.h"
#include "widgets/gimpdialogfactory.h"
#include "widgets/gimpdockcontainer.h"
#include "widgets/gimpsessioninfo.h"
#include "gimpcanvascursor.h"
#include "gimpdisplay.h"
#include "gimpcursorview.h"
#include "gimpdisplayshell.h"
#include "gimpdisplayshell-cursor.h"
#include "gimpdisplayshell-transform.h"
#include "gimpstatusbar.h"
static void gimp_display_shell_real_set_cursor (GimpDisplayShell *shell,
GimpCursorType cursor_type,
GimpToolCursorType tool_cursor,
GimpCursorModifier modifier,
gboolean always_install);
/* public functions */
void
gimp_display_shell_set_cursor (GimpDisplayShell *shell,
GimpCursorType cursor_type,
GimpToolCursorType tool_cursor,
GimpCursorModifier modifier)
{
g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
if (! shell->using_override_cursor)
{
gimp_display_shell_real_set_cursor (shell,
cursor_type,
tool_cursor,
modifier,
FALSE);
}
}
void
gimp_display_shell_unset_cursor (GimpDisplayShell *shell)
{
g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
if (! shell->using_override_cursor)
{
gimp_display_shell_real_set_cursor (shell,
(GimpCursorType) -1, 0, 0, FALSE);
}
}
void
gimp_display_shell_set_override_cursor (GimpDisplayShell *shell,
GimpCursorType cursor_type)
{
g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
if (! shell->using_override_cursor ||
(shell->using_override_cursor &&
shell->override_cursor != cursor_type))
{
shell->override_cursor = cursor_type;
shell->using_override_cursor = TRUE;
gimp_cursor_set (shell->canvas,
shell->cursor_handedness,
cursor_type,
GIMP_TOOL_CURSOR_NONE,
GIMP_CURSOR_MODIFIER_NONE);
}
}
void
gimp_display_shell_unset_override_cursor (GimpDisplayShell *shell)
{
g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
if (shell->using_override_cursor)
{
shell->using_override_cursor = FALSE;
gimp_display_shell_real_set_cursor (shell,
shell->current_cursor,
shell->tool_cursor,
shell->cursor_modifier,
TRUE);
}
}
void
gimp_display_shell_update_software_cursor (GimpDisplayShell *shell,
GimpCursorPrecision precision,
gint display_x,
gint display_y,
gdouble image_x,
gdouble image_y)
{
GimpImageWindow *image_window;
GimpDialogFactory *factory;
GimpStatusbar *statusbar;
GtkWidget *widget;
GimpImage *image;
g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
image = gimp_display_get_image (shell->display);
if (shell->draw_cursor &&
shell->proximity &&
display_x >= 0 &&
display_y >= 0)
{
gimp_canvas_item_begin_change (shell->cursor);
gimp_canvas_cursor_set (shell->cursor,
display_x,
display_y);
gimp_canvas_item_set_visible (shell->cursor, TRUE);
gimp_canvas_item_end_change (shell->cursor);
}
else
{
gimp_canvas_item_set_visible (shell->cursor, FALSE);
}
/* use the passed image_coords for the statusbar because they are
* possibly snapped...
*/
statusbar = gimp_display_shell_get_statusbar (shell);
gimp_statusbar_update_cursor (statusbar, precision, image_x, image_y);
image_window = gimp_display_shell_get_window (shell);
factory = gimp_dock_container_get_dialog_factory (GIMP_DOCK_CONTAINER (image_window));
widget = gimp_dialog_factory_find_widget (factory, "gimp-cursor-view");
if (widget)
{
GtkWidget *cursor_view = gtk_bin_get_child (GTK_BIN (widget));
if (cursor_view)
{
gint t_x = -1;
gint t_y = -1;
/* ...but use the unsnapped display_coords for the info window */
if (display_x >= 0 && display_y >= 0)
gimp_display_shell_untransform_xy (shell, display_x, display_y,
&t_x, &t_y, FALSE);
gimp_cursor_view_update_cursor (GIMP_CURSOR_VIEW (cursor_view),
image, shell->unit,
t_x, t_y);
}
}
}
void
gimp_display_shell_clear_software_cursor (GimpDisplayShell *shell)
{
GimpImageWindow *image_window;
GimpDialogFactory *factory;
GimpStatusbar *statusbar;
GtkWidget *widget;
g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
gimp_canvas_item_set_visible (shell->cursor, FALSE);
statusbar = gimp_display_shell_get_statusbar (shell);
gimp_statusbar_clear_cursor (statusbar);
image_window = gimp_display_shell_get_window (shell);
factory = gimp_dock_container_get_dialog_factory (GIMP_DOCK_CONTAINER (image_window));
widget = gimp_dialog_factory_find_widget (factory, "gimp-cursor-view");
if (widget)
{
GtkWidget *cursor_view = gtk_bin_get_child (GTK_BIN (widget));
if (cursor_view)
gimp_cursor_view_clear_cursor (GIMP_CURSOR_VIEW (cursor_view));
}
}
/* private functions */
static void
gimp_display_shell_real_set_cursor (GimpDisplayShell *shell,
GimpCursorType cursor_type,
GimpToolCursorType tool_cursor,
GimpCursorModifier modifier,
gboolean always_install)
{
GimpHandedness cursor_handedness;
g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
if (cursor_type == (GimpCursorType) -1)
{
shell->current_cursor = cursor_type;
if (gtk_widget_is_drawable (shell->canvas))
gdk_window_set_cursor (gtk_widget_get_window (shell->canvas), NULL);
return;
}
if (cursor_type != GIMP_CURSOR_NONE &&
cursor_type != GIMP_CURSOR_BAD)
{
switch (shell->display->config->cursor_mode)
{
case GIMP_CURSOR_MODE_TOOL_ICON:
break;
case GIMP_CURSOR_MODE_TOOL_CROSSHAIR:
if (cursor_type < GIMP_CURSOR_CORNER_TOP ||
cursor_type > GIMP_CURSOR_SIDE_TOP_LEFT)
{
/* the corner and side cursors count as crosshair, so leave
* them and override everything else
*/
cursor_type = GIMP_CURSOR_CROSSHAIR_SMALL;
}
break;
case GIMP_CURSOR_MODE_CROSSHAIR:
cursor_type = GIMP_CURSOR_CROSSHAIR;
tool_cursor = GIMP_TOOL_CURSOR_NONE;
if (modifier != GIMP_CURSOR_MODIFIER_BAD)
{
/* the bad modifier is always shown */
modifier = GIMP_CURSOR_MODIFIER_NONE;
}
break;
}
}
cursor_type = gimp_cursor_rotate (cursor_type, shell->rotate_angle);
cursor_handedness = GIMP_GUI_CONFIG (shell->display->config)->cursor_handedness;
if (shell->cursor_handedness != cursor_handedness ||
shell->current_cursor != cursor_type ||
shell->tool_cursor != tool_cursor ||
shell->cursor_modifier != modifier ||
always_install)
{
shell->cursor_handedness = cursor_handedness;
shell->current_cursor = cursor_type;
shell->tool_cursor = tool_cursor;
shell->cursor_modifier = modifier;
gimp_cursor_set (shell->canvas,
cursor_handedness,
cursor_type, tool_cursor, modifier);
}
}