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gimp/app/display/gimpnavigationeditor.c

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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 "gimpnavigationeditor.h"
#include "gimp-intl.h"
static void gimp_navigation_editor_docked_iface_init (GimpDockedInterface *iface);
static void gimp_navigation_editor_destroy (GtkObject *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 x,
gdouble 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_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)
{
GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (klass);
gtk_object_class->destroy = gimp_navigation_editor_destroy;
}
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;
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_destroy (GtkObject *object)
{
GimpNavigationEditor *editor = GIMP_NAVIGATION_EDITOR (object);
if (editor->shell)
gimp_navigation_editor_set_shell (editor, NULL);
GTK_OBJECT_CLASS (parent_class)->destroy (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_x, view_marker_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_x,
&view_marker_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 = style->xthickness * 4;
border_height = style->ythickness * 4;
popup_width = GIMP_VIEW (view)->renderer->width - border_width;
popup_height = GIMP_VIEW (view)->renderer->height - border_height;
x = screen_click_x -
border_width -
view_marker_x -
view_marker_width / 2;
y = screen_click_y -
border_height -
view_marker_y -
view_marker_height / 2;
/* 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,
view_marker_width / 2,
view_marker_height / 2);
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_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_hbox_new (FALSE, 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_hscale_new (GTK_ADJUSTMENT (editor->zoom_adjustment));
gtk_range_set_update_policy (GTK_RANGE (hscale), GTK_UPDATE_DELAYED);
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_STOCK_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_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, "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 (editor)->ui_manager)
gimp_ui_manager_update (GIMP_EDITOR (editor)->ui_manager,
GIMP_EDITOR (editor)->popup_data);
}
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 x,
gdouble y,
gdouble width,
gdouble height,
GimpNavigationEditor *editor)
{
if (editor->shell)
{
GimpDisplayShell *shell = editor->shell;
gimp_display_shell_scroll_center_image_coordinate (shell,
x + width / 2,
y + height / 2);
}
}
static void
gimp_navigation_editor_zoom (GimpNavigationView *view,
GimpZoomType direction,
GimpNavigationEditor *editor)
{
g_return_if_fail (direction != GIMP_ZOOM_TO);
if (editor->shell)
{
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;
}
g_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 void
gimp_navigation_editor_zoom_adj_changed (GtkAdjustment *adj,
GimpNavigationEditor *editor)
{
gimp_display_shell_scale (editor->shell,
GIMP_ZOOM_TO,
pow (2.0, gtk_adjustment_get_value (adj)),
GIMP_ZOOM_FOCUS_BEST_GUESS);
}
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 (editor)->ui_manager)
gimp_ui_manager_update (GIMP_EDITOR (editor)->ui_manager,
GIMP_EDITOR (editor)->popup_data);
}
static void
gimp_navigation_editor_shell_scrolled (GimpDisplayShell *shell,
GimpNavigationEditor *editor)
{
gimp_navigation_editor_update_marker (editor);
if (GIMP_EDITOR (editor)->ui_manager)
gimp_ui_manager_update (GIMP_EDITOR (editor)->ui_manager,
GIMP_EDITOR (editor)->popup_data);
}
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 (editor)->ui_manager)
gimp_ui_manager_update (GIMP_EDITOR (editor)->ui_manager,
GIMP_EDITOR (editor)->popup_data);
}
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_navigation_view_set_marker (view, x, y, w, h);
}
}
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