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Gimp/app/display/gimpnavigationeditor.c
Michael Natterer 539927ebfa app: replace all g_assert() by the newly added gimp_assert() 
which is just a #define to g_assert for now, but can now easily be
turned into something that does some nicer debugging using our new
stack trace infrastructure. This commit also reverts all constructed()
functions to use assert again.
2018-02-11 22:23:10 +01:00

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/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* gimpnavigationeditor.c
* Copyright (C) 2001 Michael Natterer <mitch@gimp.org>
*
* partly based on app/nav_window
* Copyright (C) 1999 Andy Thomas <alt@gimp.org>
*
* 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 <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <gegl.h>
#include <gtk/gtk.h>
#include "libgimpmath/gimpmath.h"
#include "libgimpwidgets/gimpwidgets.h"
#include "display-types.h"
#include "config/gimpdisplayconfig.h"
#include "core/gimp.h"
#include "core/gimpcontext.h"
#include "core/gimpimage.h"
#include "widgets/gimpdocked.h"
#include "widgets/gimphelp-ids.h"
#include "widgets/gimpmenufactory.h"
#include "widgets/gimpnavigationview.h"
#include "widgets/gimpuimanager.h"
#include "widgets/gimpviewrenderer.h"
#include "gimpdisplay.h"
#include "gimpdisplayshell.h"
#include "gimpdisplayshell-scale.h"
#include "gimpdisplayshell-scroll.h"
#include "gimpdisplayshell-transform.h"
#include "gimpnavigationeditor.h"
#include "gimp-intl.h"
#define UPDATE_DELAY 300 /* From GtkRange in GTK+ 2.22 */
static void gimp_navigation_editor_docked_iface_init (GimpDockedInterface *iface);
static void gimp_navigation_editor_dispose (GObject *object);
static void gimp_navigation_editor_set_context (GimpDocked *docked,
GimpContext *context);
static GtkWidget * gimp_navigation_editor_new_private (GimpMenuFactory *menu_factory,
GimpDisplayShell *shell);
static void gimp_navigation_editor_set_shell (GimpNavigationEditor *editor,
GimpDisplayShell *shell);
static gboolean gimp_navigation_editor_button_release (GtkWidget *widget,
GdkEventButton *bevent,
GimpDisplayShell *shell);
static void gimp_navigation_editor_marker_changed (GimpNavigationView *view,
gdouble center_x,
gdouble center_y,
gdouble width,
gdouble height,
GimpNavigationEditor *editor);
static void gimp_navigation_editor_zoom (GimpNavigationView *view,
GimpZoomType direction,
GimpNavigationEditor *editor);
static void gimp_navigation_editor_scroll (GimpNavigationView *view,
GdkScrollDirection direction,
GimpNavigationEditor *editor);
static void gimp_navigation_editor_zoom_adj_changed (GtkAdjustment *adj,
GimpNavigationEditor *editor);
static void gimp_navigation_editor_shell_scaled (GimpDisplayShell *shell,
GimpNavigationEditor *editor);
static void gimp_navigation_editor_shell_scrolled (GimpDisplayShell *shell,
GimpNavigationEditor *editor);
static void gimp_navigation_editor_shell_rotated (GimpDisplayShell *shell,
GimpNavigationEditor *editor);
static void gimp_navigation_editor_shell_reconnect (GimpDisplayShell *shell,
GimpNavigationEditor *editor);
static void gimp_navigation_editor_update_marker (GimpNavigationEditor *editor);
G_DEFINE_TYPE_WITH_CODE (GimpNavigationEditor, gimp_navigation_editor,
GIMP_TYPE_EDITOR,
G_IMPLEMENT_INTERFACE (GIMP_TYPE_DOCKED,
gimp_navigation_editor_docked_iface_init))
#define parent_class gimp_navigation_editor_parent_class
static void
gimp_navigation_editor_class_init (GimpNavigationEditorClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->dispose = gimp_navigation_editor_dispose;
}
static void
gimp_navigation_editor_docked_iface_init (GimpDockedInterface *iface)
{
iface->set_context = gimp_navigation_editor_set_context;
}
static void
gimp_navigation_editor_init (GimpNavigationEditor *editor)
{
GtkWidget *frame;
editor->context = NULL;
editor->shell = NULL;
editor->scale_timeout = 0;
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
gtk_box_pack_start (GTK_BOX (editor), frame, TRUE, TRUE, 0);
gtk_widget_show (frame);
editor->view = gimp_view_new_by_types (NULL,
GIMP_TYPE_NAVIGATION_VIEW,
GIMP_TYPE_IMAGE,
GIMP_VIEW_SIZE_MEDIUM, 0, TRUE);
gtk_container_add (GTK_CONTAINER (frame), editor->view);
gtk_widget_show (editor->view);
g_signal_connect (editor->view, "marker-changed",
G_CALLBACK (gimp_navigation_editor_marker_changed),
editor);
g_signal_connect (editor->view, "zoom",
G_CALLBACK (gimp_navigation_editor_zoom),
editor);
g_signal_connect (editor->view, "scroll",
G_CALLBACK (gimp_navigation_editor_scroll),
editor);
gtk_widget_set_sensitive (GTK_WIDGET (editor), FALSE);
}
static void
gimp_navigation_editor_dispose (GObject *object)
{
GimpNavigationEditor *editor = GIMP_NAVIGATION_EDITOR (object);
if (editor->shell)
gimp_navigation_editor_set_shell (editor, NULL);
if (editor->scale_timeout)
{
g_source_remove (editor->scale_timeout);
editor->scale_timeout = 0;
}
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static void
gimp_navigation_editor_display_changed (GimpContext *context,
GimpDisplay *display,
GimpNavigationEditor *editor)
{
GimpDisplayShell *shell = NULL;
if (display)
shell = gimp_display_get_shell (display);
gimp_navigation_editor_set_shell (editor, shell);
}
static void
gimp_navigation_editor_set_context (GimpDocked *docked,
GimpContext *context)
{
GimpNavigationEditor *editor = GIMP_NAVIGATION_EDITOR (docked);
GimpDisplay *display = NULL;
if (editor->context)
{
g_signal_handlers_disconnect_by_func (editor->context,
gimp_navigation_editor_display_changed,
editor);
}
editor->context = context;
if (editor->context)
{
g_signal_connect (context, "display-changed",
G_CALLBACK (gimp_navigation_editor_display_changed),
editor);
display = gimp_context_get_display (context);
}
gimp_view_renderer_set_context (GIMP_VIEW (editor->view)->renderer,
context);
gimp_navigation_editor_display_changed (editor->context,
display,
editor);
}
/* public functions */
GtkWidget *
gimp_navigation_editor_new (GimpMenuFactory *menu_factory)
{
return gimp_navigation_editor_new_private (menu_factory, NULL);
}
void
gimp_navigation_editor_popup (GimpDisplayShell *shell,
GtkWidget *widget,
gint click_x,
gint click_y)
{
GtkStyle *style = gtk_widget_get_style (widget);
GimpNavigationEditor *editor;
GimpNavigationView *view;
GdkScreen *screen;
gint x, y;
gint view_marker_center_x, view_marker_center_y;
gint view_marker_width, view_marker_height;
g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
g_return_if_fail (GTK_IS_WIDGET (widget));
if (! shell->nav_popup)
{
GtkWidget *frame;
shell->nav_popup = gtk_window_new (GTK_WINDOW_POPUP);
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_OUT);
gtk_container_add (GTK_CONTAINER (shell->nav_popup), frame);
gtk_widget_show (frame);
editor =
GIMP_NAVIGATION_EDITOR (gimp_navigation_editor_new_private (NULL,
shell));
gtk_container_add (GTK_CONTAINER (frame), GTK_WIDGET (editor));
gtk_widget_show (GTK_WIDGET (editor));
g_signal_connect (editor->view, "button-release-event",
G_CALLBACK (gimp_navigation_editor_button_release),
shell);
}
else
{
GtkWidget *bin = gtk_bin_get_child (GTK_BIN (shell->nav_popup));
editor = GIMP_NAVIGATION_EDITOR (gtk_bin_get_child (GTK_BIN (bin)));
}
view = GIMP_NAVIGATION_VIEW (editor->view);
/* Set poup screen */
screen = gtk_widget_get_screen (widget);
gtk_window_set_screen (GTK_WINDOW (shell->nav_popup), screen);
gimp_navigation_view_get_local_marker (view,
&view_marker_center_x,
&view_marker_center_y,
&view_marker_width,
&view_marker_height);
/* Position the popup */
{
gint x_origin, y_origin;
gint popup_width, popup_height;
gint border_width, border_height;
gint screen_click_x, screen_click_y;
gdk_window_get_origin (gtk_widget_get_window (widget),
&x_origin, &y_origin);
screen_click_x = x_origin + click_x;
screen_click_y = y_origin + click_y;
border_width = 2 * style->xthickness;
border_height = 2 * style->ythickness;
popup_width = GIMP_VIEW (view)->renderer->width - 2 * border_width;
popup_height = GIMP_VIEW (view)->renderer->height - 2 * border_height;
x = screen_click_x -
border_width -
view_marker_center_x;
y = screen_click_y -
border_height -
view_marker_center_y;
/* When the image is zoomed out and overscrolled, the above
* calculation risks positioning the popup far far away from the
* click coordinate. We don't want that, so perform some clamping.
*/
x = CLAMP (x, screen_click_x - popup_width, screen_click_x);
y = CLAMP (y, screen_click_y - popup_height, screen_click_y);
/* If the popup doesn't fit into the screen, we have a problem.
* We move the popup onscreen and risk that the pointer is not
* in the square representing the viewable area anymore. Moving
* the pointer will make the image scroll by a large amount,
* but then it works as usual. Probably better than a popup that
* is completely unusable in the lower right of the screen.
*
* Warping the pointer would be another solution ...
*/
x = CLAMP (x, 0, gdk_screen_get_width (screen) - popup_width);
y = CLAMP (y, 0, gdk_screen_get_height (screen) - popup_height);
gtk_window_move (GTK_WINDOW (shell->nav_popup), x, y);
}
gtk_widget_show (shell->nav_popup);
gdk_flush ();
/* fill in then grab pointer */
gimp_navigation_view_set_motion_offset (view, 0, 0);
gimp_navigation_view_grab_pointer (view);
}
/* private functions */
static GtkWidget *
gimp_navigation_editor_new_private (GimpMenuFactory *menu_factory,
GimpDisplayShell *shell)
{
GimpNavigationEditor *editor;
g_return_val_if_fail (menu_factory == NULL ||
GIMP_IS_MENU_FACTORY (menu_factory), NULL);
g_return_val_if_fail (shell == NULL || GIMP_IS_DISPLAY_SHELL (shell), NULL);
g_return_val_if_fail (menu_factory || shell, NULL);
if (shell)
{
Gimp *gimp = shell->display->gimp;
GimpDisplayConfig *config = shell->display->config;
GimpView *view;
editor = g_object_new (GIMP_TYPE_NAVIGATION_EDITOR, NULL);
view = GIMP_VIEW (editor->view);
gimp_view_renderer_set_size (view->renderer,
config->nav_preview_size * 3,
view->renderer->border_width);
gimp_view_renderer_set_context (view->renderer,
gimp_get_user_context (gimp));
gimp_view_renderer_set_color_config (view->renderer,
gimp_display_shell_get_color_config (shell));
gimp_navigation_editor_set_shell (editor, shell);
}
else
{
GtkWidget *hscale;
GtkWidget *hbox;
editor = g_object_new (GIMP_TYPE_NAVIGATION_EDITOR,
"menu-factory", menu_factory,
"menu-identifier", "<NavigationEditor>",
NULL);
gtk_widget_set_size_request (editor->view,
GIMP_VIEW_SIZE_HUGE,
GIMP_VIEW_SIZE_HUGE);
gimp_view_set_expand (GIMP_VIEW (editor->view), TRUE);
/* the editor buttons */
editor->zoom_out_button =
gimp_editor_add_action_button (GIMP_EDITOR (editor), "view",
"view-zoom-out", NULL);
editor->zoom_in_button =
gimp_editor_add_action_button (GIMP_EDITOR (editor), "view",
"view-zoom-in", NULL);
editor->zoom_100_button =
gimp_editor_add_action_button (GIMP_EDITOR (editor), "view",
"view-zoom-1-1", NULL);
editor->zoom_fit_in_button =
gimp_editor_add_action_button (GIMP_EDITOR (editor), "view",
"view-zoom-fit-in", NULL);
editor->zoom_fill_button =
gimp_editor_add_action_button (GIMP_EDITOR (editor), "view",
"view-zoom-fill", NULL);
editor->shrink_wrap_button =
gimp_editor_add_action_button (GIMP_EDITOR (editor), "view",
"view-shrink-wrap", NULL);
/* the zoom scale */
hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
gtk_box_pack_end (GTK_BOX (editor), hbox, FALSE, FALSE, 0);
gtk_widget_show (hbox);
editor->zoom_adjustment =
GTK_ADJUSTMENT (gtk_adjustment_new (0.0, -8.0, 8.0, 0.5, 1.0, 0.0));
g_signal_connect (editor->zoom_adjustment, "value-changed",
G_CALLBACK (gimp_navigation_editor_zoom_adj_changed),
editor);
hscale = gtk_scale_new (GTK_ORIENTATION_HORIZONTAL,
editor->zoom_adjustment);
gtk_scale_set_draw_value (GTK_SCALE (hscale), FALSE);
gtk_box_pack_start (GTK_BOX (hbox), hscale, TRUE, TRUE, 0);
gtk_widget_show (hscale);
/* the zoom label */
editor->zoom_label = gtk_label_new ("100%");
gtk_label_set_width_chars (GTK_LABEL (editor->zoom_label), 7);
gtk_box_pack_start (GTK_BOX (hbox), editor->zoom_label, FALSE, FALSE, 0);
gtk_widget_show (editor->zoom_label);
}
gimp_view_renderer_set_background (GIMP_VIEW (editor->view)->renderer,
GIMP_ICON_TEXTURE);
return GTK_WIDGET (editor);
}
static void
gimp_navigation_editor_set_shell (GimpNavigationEditor *editor,
GimpDisplayShell *shell)
{
g_return_if_fail (GIMP_IS_NAVIGATION_EDITOR (editor));
g_return_if_fail (! shell || GIMP_IS_DISPLAY_SHELL (shell));
if (shell == editor->shell)
return;
if (editor->shell)
{
g_signal_handlers_disconnect_by_func (editor->shell,
gimp_navigation_editor_shell_scaled,
editor);
g_signal_handlers_disconnect_by_func (editor->shell,
gimp_navigation_editor_shell_scrolled,
editor);
g_signal_handlers_disconnect_by_func (editor->shell,
gimp_navigation_editor_shell_rotated,
editor);
g_signal_handlers_disconnect_by_func (editor->shell,
gimp_navigation_editor_shell_reconnect,
editor);
}
else if (shell)
{
gtk_widget_set_sensitive (GTK_WIDGET (editor), TRUE);
}
editor->shell = shell;
if (editor->shell)
{
GimpImage *image = gimp_display_get_image (shell->display);
gimp_view_set_viewable (GIMP_VIEW (editor->view),
GIMP_VIEWABLE (image));
g_signal_connect (editor->shell, "scaled",
G_CALLBACK (gimp_navigation_editor_shell_scaled),
editor);
g_signal_connect (editor->shell, "scrolled",
G_CALLBACK (gimp_navigation_editor_shell_scrolled),
editor);
g_signal_connect (editor->shell, "rotated",
G_CALLBACK (gimp_navigation_editor_shell_rotated),
editor);
g_signal_connect (editor->shell, "reconnect",
G_CALLBACK (gimp_navigation_editor_shell_reconnect),
editor);
gimp_navigation_editor_shell_scaled (editor->shell, editor);
}
else
{
gimp_view_set_viewable (GIMP_VIEW (editor->view), NULL);
gtk_widget_set_sensitive (GTK_WIDGET (editor), FALSE);
}
if (gimp_editor_get_ui_manager (GIMP_EDITOR (editor)))
gimp_ui_manager_update (gimp_editor_get_ui_manager (GIMP_EDITOR (editor)),
gimp_editor_get_popup_data (GIMP_EDITOR (editor)));
}
static gboolean
gimp_navigation_editor_button_release (GtkWidget *widget,
GdkEventButton *bevent,
GimpDisplayShell *shell)
{
if (bevent->button == 1)
{
gtk_widget_hide (shell->nav_popup);
}
return FALSE;
}
static void
gimp_navigation_editor_marker_changed (GimpNavigationView *view,
gdouble center_x,
gdouble center_y,
gdouble width,
gdouble height,
GimpNavigationEditor *editor)
{
if (editor->shell)
{
if (gimp_display_get_image (editor->shell->display))
gimp_display_shell_scroll_center_image_xy (editor->shell,
center_x, center_y);
}
}
static void
gimp_navigation_editor_zoom (GimpNavigationView *view,
GimpZoomType direction,
GimpNavigationEditor *editor)
{
g_return_if_fail (direction != GIMP_ZOOM_TO);
if (editor->shell)
{
if (gimp_display_get_image (editor->shell->display))
gimp_display_shell_scale (editor->shell,
direction,
0.0,
GIMP_ZOOM_FOCUS_BEST_GUESS);
}
}
static void
gimp_navigation_editor_scroll (GimpNavigationView *view,
GdkScrollDirection direction,
GimpNavigationEditor *editor)
{
if (editor->shell)
{
GtkAdjustment *adj = NULL;
gdouble value;
switch (direction)
{
case GDK_SCROLL_LEFT:
case GDK_SCROLL_RIGHT:
adj = editor->shell->hsbdata;
break;
case GDK_SCROLL_UP:
case GDK_SCROLL_DOWN:
adj = editor->shell->vsbdata;
break;
}
gimp_assert (adj != NULL);
value = gtk_adjustment_get_value (adj);
switch (direction)
{
case GDK_SCROLL_LEFT:
case GDK_SCROLL_UP:
value -= gtk_adjustment_get_page_increment (adj) / 2;
break;
case GDK_SCROLL_RIGHT:
case GDK_SCROLL_DOWN:
value += gtk_adjustment_get_page_increment (adj) / 2;
break;
}
value = CLAMP (value,
gtk_adjustment_get_lower (adj),
gtk_adjustment_get_upper (adj) -
gtk_adjustment_get_page_size (adj));
gtk_adjustment_set_value (adj, value);
}
}
static gboolean
gimp_navigation_editor_zoom_adj_changed_timeout (gpointer data)
{
GimpNavigationEditor *editor = GIMP_NAVIGATION_EDITOR (data);
GtkAdjustment *adj = editor->zoom_adjustment;
if (gimp_display_get_image (editor->shell->display))
gimp_display_shell_scale (editor->shell,
GIMP_ZOOM_TO,
pow (2.0, gtk_adjustment_get_value (adj)),
GIMP_ZOOM_FOCUS_BEST_GUESS);
editor->scale_timeout = 0;
return FALSE;
}
static void
gimp_navigation_editor_zoom_adj_changed (GtkAdjustment *adj,
GimpNavigationEditor *editor)
{
if (editor->scale_timeout)
g_source_remove (editor->scale_timeout);
editor->scale_timeout =
g_timeout_add (UPDATE_DELAY,
gimp_navigation_editor_zoom_adj_changed_timeout,
editor);
}
static void
gimp_navigation_editor_shell_scaled (GimpDisplayShell *shell,
GimpNavigationEditor *editor)
{
if (editor->zoom_label)
{
gchar *str;
g_object_get (shell->zoom,
"percentage", &str,
NULL);
gtk_label_set_text (GTK_LABEL (editor->zoom_label), str);
g_free (str);
}
if (editor->zoom_adjustment)
{
gdouble val;
val = log (gimp_zoom_model_get_factor (shell->zoom)) / G_LN2;
g_signal_handlers_block_by_func (editor->zoom_adjustment,
gimp_navigation_editor_zoom_adj_changed,
editor);
gtk_adjustment_set_value (editor->zoom_adjustment, val);
g_signal_handlers_unblock_by_func (editor->zoom_adjustment,
gimp_navigation_editor_zoom_adj_changed,
editor);
}
gimp_navigation_editor_update_marker (editor);
if (gimp_editor_get_ui_manager (GIMP_EDITOR (editor)))
gimp_ui_manager_update (gimp_editor_get_ui_manager (GIMP_EDITOR (editor)),
gimp_editor_get_popup_data (GIMP_EDITOR (editor)));
}
static void
gimp_navigation_editor_shell_scrolled (GimpDisplayShell *shell,
GimpNavigationEditor *editor)
{
gimp_navigation_editor_update_marker (editor);
if (gimp_editor_get_ui_manager (GIMP_EDITOR (editor)))
gimp_ui_manager_update (gimp_editor_get_ui_manager (GIMP_EDITOR (editor)),
gimp_editor_get_popup_data (GIMP_EDITOR (editor)));
}
static void
gimp_navigation_editor_shell_rotated (GimpDisplayShell *shell,
GimpNavigationEditor *editor)
{
gimp_navigation_editor_update_marker (editor);
if (gimp_editor_get_ui_manager (GIMP_EDITOR (editor)))
gimp_ui_manager_update (gimp_editor_get_ui_manager (GIMP_EDITOR (editor)),
gimp_editor_get_popup_data (GIMP_EDITOR (editor)));
}
static void
gimp_navigation_editor_shell_reconnect (GimpDisplayShell *shell,
GimpNavigationEditor *editor)
{
GimpImage *image = gimp_display_get_image (shell->display);
gimp_view_set_viewable (GIMP_VIEW (editor->view),
GIMP_VIEWABLE (image));
if (gimp_editor_get_ui_manager (GIMP_EDITOR (editor)))
gimp_ui_manager_update (gimp_editor_get_ui_manager (GIMP_EDITOR (editor)),
gimp_editor_get_popup_data (GIMP_EDITOR (editor)));
}
static void
gimp_navigation_editor_update_marker (GimpNavigationEditor *editor)
{
GimpViewRenderer *renderer = GIMP_VIEW (editor->view)->renderer;
GimpDisplayShell *shell = editor->shell;
if (renderer->dot_for_dot != shell->dot_for_dot)
gimp_view_renderer_set_dot_for_dot (renderer, shell->dot_for_dot);
if (renderer->viewable)
{
GimpNavigationView *view = GIMP_NAVIGATION_VIEW (editor->view);
gdouble x, y;
gdouble w, h;
gimp_display_shell_scroll_get_viewport (shell, &x, &y, &w, &h);
gimp_display_shell_untransform_xy_f (shell,
shell->disp_width / 2,
shell->disp_height / 2,
&x, &y);
gimp_navigation_view_set_marker (view,
x, y, w, h,
shell->flip_horizontally,
shell->flip_vertically,
shell->rotate_angle);
}
}
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