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cee3baea0fb469c86b7c6ca943c00a73ee10c551
gimp/app/display/gimpnavigationeditor.c
Michael Natterer cee3baea0f First draft of the "no image open" window, which is implemented as a 
2008-03-18  Michael Natterer  <mitch@gimp.org>

	First draft of the "no image open" window, which is implemented as
	a display without image (a view with NULL model). Didn't change
	the display's appearance yet so I can first make sure the display
	without image works properly in all details before hiding these
	details.

	* app/core/gimp-gui.[ch]: add "gimp" parameter to display_create()
	and allow "image" to be NULL.

	* app/core/gimpcontext.c (gimp_context_real_set_display): a
	display's image can be NULL now.

	* app/display/gimpdisplay.[ch]: add Gimp and GimpDisplayConfig
	members.  Add Gimp parameter to gimp_display_shell_new(). Changed
	gimp_display_reconnect() to gimp_display_set_image() and allow to
	set a NULL image.

	* app/gui/gui-vtable.c (gui_display_create): if there is a single
	display without an image, call gimp_display_set_image() on that
	display instead of creating a new one.

	* app/display/gimpdisplayshell-close.c: if the last display is
	closed, don't close it but make it empty. Factored out that code
	to gimp_display_shell_really_close().

	* app/display/gimpdisplayshell-dnd.c: when dropping uris on an
	empty display, open the first one into that display and the other
	ones as layers of the newly opened image. This is consistent with
	dropping on an existing image but maybe needs some discussion.

	* app/display/gimpdisplayshell-callbacks.c: bail out early in the
	tool event callback so tools never have to deal with empty
	displays. In expose(), draw the drop zone on the empty display.

	* app/display/gimpdisplayshell-title.c: set the empty display's
	title to "Gimp - Drop Files".

	* app/display/gimpdisplay-foreach.c
	* app/display/gimpdisplay-handlers.c
	* app/display/gimpdisplayshell-appearance.c
	* app/display/gimpdisplayshell-autoscroll.c
	* app/display/gimpdisplayshell-callbacks.c
	* app/display/gimpdisplayshell-cursor.c
	* app/display/gimpdisplayshell-dnd.c
	* app/display/gimpdisplayshell-draw.c
	* app/display/gimpdisplayshell-filter-dialog.c
	* app/display/gimpdisplayshell-handlers.c
	* app/display/gimpdisplayshell-layer-select.c
	* app/display/gimpdisplayshell-preview.c
	* app/display/gimpdisplayshell-render.c
	* app/display/gimpdisplayshell-scale.c
	* app/display/gimpdisplayshell-scroll.c
	* app/display/gimpdisplayshell-selection.c
	* app/display/gimpdisplayshell-title.c
	* app/display/gimpdisplayshell.c
	* app/display/gimpnavigationeditor.c
	* app/display/gimpstatusbar.c: use display->gimp and
	display->config instead of going via the image. Guard against
	empty displays in some few places (most places can't be
	called). Where needed, use the canvas' dimensions instead of the
	image's dimensions so scroll offsets and scrollbars still have
	sane values instead of the last image's ones.

	* app/actions/actions.c (action_data_get_gimp)
	(action_data_get_context): use display->gimp instead of
	display->image->gimp.

	* app/actions/edit-commands.c (edit_paste_cmd_callback): redirect
	to "paste as new" if there is an empty display.

	* app/actions/tools-commands.c (tools_select_cmd_callback): don't
	initialize the new tool on an empty display.

	* app/actions/view-actions.c (view_actions_update): changed lots
	of sensitivity settings to be insensitive when there is no image
	(instead of no display).

	* app/actions/view-commands.c: use the display's config object
	instead of gimp's.


svn path=/trunk/; revision=25113
2008-03-18 21:22:21 +00:00

649 lines
22 KiB
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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 2 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, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "config.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 *view,
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,
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_context_changed (GimpContext *context,
GimpDisplay *display,
GimpNavigationEditor *editor)
{
GimpDisplayShell *shell = NULL;
if (display)
shell = GIMP_DISPLAY_SHELL (display->shell);
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;
GimpDisplayShell *shell = NULL;
if (editor->context)
{
g_signal_handlers_disconnect_by_func (editor->context,
gimp_navigation_editor_context_changed,
editor);
}
editor->context = context;
if (context)
{
g_signal_connect (context, "display-changed",
G_CALLBACK (gimp_navigation_editor_context_changed),
editor);
display = gimp_context_get_display (context);
}
gimp_view_renderer_set_context (GIMP_VIEW (editor->view)->renderer,
context);
if (display)
shell = GIMP_DISPLAY_SHELL (display->shell);
gimp_navigation_editor_set_shell (editor, shell);
}
/* 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)
{
GimpNavigationEditor *editor;
GimpNavigationView *view;
GdkScreen *screen;
gint x, y;
gint x_org, y_org;
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)));
}
screen = gtk_widget_get_screen (widget);
gtk_window_set_screen (GTK_WINDOW (shell->nav_popup), screen);
view = GIMP_NAVIGATION_VIEW (editor->view);
/* decide where to put the popup */
gdk_window_get_origin (widget->window, &x_org, &y_org);
#define BORDER_PEN_WIDTH 3
x = (x_org + click_x -
view->p_x -
0.5 * (view->p_width - BORDER_PEN_WIDTH) -
2 * widget->style->xthickness);
y = (y_org + click_y -
view->p_y -
0.5 * (view->p_height - BORDER_PEN_WIDTH) -
2 * widget->style->ythickness);
/* 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) -
GIMP_VIEW (view)->renderer->width -
4 * widget->style->xthickness));
y = CLAMP (y, 0, (gdk_screen_get_height (screen) -
GIMP_VIEW (view)->renderer->height -
4 * widget->style->ythickness));
gtk_window_move (GTK_WINDOW (shell->nav_popup), x, y);
gtk_widget_show (shell->nav_popup);
gdk_flush ();
/* fill in then grab pointer */
view->motion_offset_x = 0.5 * (view->p_width - BORDER_PEN_WIDTH);
view->motion_offset_y = 0.5 * (view->p_height - BORDER_PEN_WIDTH);
#undef BORDER_PEN_WIDTH
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 = GIMP_DISPLAY_CONFIG (gimp->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)
{
gimp_view_set_viewable (GIMP_VIEW (editor->view),
GIMP_VIEWABLE (shell->display->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,
GimpNavigationEditor *editor)
{
if (editor->shell)
{
GimpDisplayShell *shell = editor->shell;
gimp_display_shell_scroll (shell,
RINT (x * shell->scale_x - shell->offset_x),
RINT (y * shell->scale_y - shell->offset_y));
}
}
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);
}
}
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 = adj->value;
switch (direction)
{
case GDK_SCROLL_LEFT:
case GDK_SCROLL_UP:
value -= adj->page_increment / 2;
break;
case GDK_SCROLL_RIGHT:
case GDK_SCROLL_DOWN:
value += adj->page_increment / 2;
break;
}
value = CLAMP (value, adj->lower, adj->upper - adj->page_size);
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, adj->value));
}
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)
{
gimp_view_set_viewable (GIMP_VIEW (editor->view),
GIMP_VIEWABLE (shell->display->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)
gimp_navigation_view_set_marker (GIMP_NAVIGATION_VIEW (editor->view),
shell->offset_x / shell->scale_x,
shell->offset_y / shell->scale_y,
shell->disp_width / shell->scale_x,
shell->disp_height / shell->scale_y);
}
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