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gimp/app/nav_window.c

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/* The GIMP -- an 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 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 <stdlib.h>
#include <gtk/gtk.h>
#include <gdk/gdkkeysyms.h>
#include "libgimpmath/gimpmath.h"
#include "libgimpwidgets/gimpwidgets.h"
#include "widgets/widgets-types.h"
#include "base/temp-buf.h"
#include "core/gimp.h"
#include "core/gimpcontainer.h"
#include "core/gimpcontext.h"
#include "core/gimpimage.h"
#include "core/gimplist.h"
#include "display/gimpdisplay.h"
#include "display/gimpdisplay-scroll.h"
#include "display/gimpdisplay-scale.h"
#include "widgets/gimpnavigationpreview.h"
#include "app_procs.h"
#include "nav_window.h"
#include "app_procs.h"
#include "gimprc.h"
#include "libgimp/gimpintl.h"
#include "pixmaps/zoom_in.xpm"
#include "pixmaps/zoom_out.xpm"
#define PREVIEW_MASK GDK_EXPOSURE_MASK | \
GDK_BUTTON_PRESS_MASK | \
GDK_KEY_PRESS_MASK | \
GDK_KEY_RELEASE_MASK | \
GDK_POINTER_MOTION_MASK
/* Navigation preview sizes */
#define NAV_PREVIEW_WIDTH 112
#define NAV_PREVIEW_HEIGHT 112
#define BORDER_PEN_WIDTH 3
#define MAX_SCALE_BUF 20
typedef enum
{
NAV_WINDOW,
NAV_POPUP
} NavWinType;
struct _NavigationDialog
{
NavWinType ptype;
GtkWidget *shell;
GtkWidget *new_preview;
GtkWidget *preview_frame;
GtkWidget *zoom_label;
GtkObject *zoom_adjustment;
GtkWidget *preview;
GDisplay *gdisp; /* I'm not happy 'bout this one */
GdkGC *gc;
gint dispx; /* x pos of top left corner of display area */
gint dispy; /* y pos of top left corner of display area */
gint dispwidth; /* width of display area */
gint dispheight; /* height of display area */
gboolean sq_grabbed; /* In the process of moving the preview square */
gint motion_offsetx;
gint motion_offsety;
gint pwidth; /* real preview width */
gint pheight; /* real preview height */
gint imagewidth; /* width of the real image */
gint imageheight; /* height of real image */
gdouble ratio;
gint nav_preview_width;
gint nav_preview_height;
gboolean block_adj_sig;
gboolean frozen; /* Has the dialog been frozen ? */
guint idle_id;
};
static NavigationDialog * nav_dialog_new (GDisplay *gdisp,
NavWinType ptype);
static gchar * nav_dialog_title (GDisplay *gdisp);
static GtkWidget * nav_create_button_area (NavigationDialog *nav_dialog);
static void nav_dialog_close_callback (GtkWidget *widget,
gpointer data);
static void nav_dialog_disp_area (NavigationDialog *nav_dialog,
GDisplay *gdisp);
static void nav_dialog_draw_sqr (NavigationDialog *nav_dialog,
gboolean undraw,
gint x,
gint y,
gint w,
gint h);
static gboolean nav_dialog_preview_events (GtkWidget *widget,
GdkEvent *event,
gpointer data);
static void nav_dialog_idle_update_preview (NavigationDialog *nav_dialog);
static void nav_dialog_update_preview (NavigationDialog *nav_dialog);
static void nav_dialog_update_preview_blank (NavigationDialog *nav_dialog);
static void create_preview_widget (NavigationDialog *nav_dialog);
static void set_size_data (NavigationDialog *nav_dialog);
static void nav_image_need_update (GimpImage *gimage,
gpointer data);
static void nav_dialog_display_changed (GimpContext *context,
GDisplay *gdisp,
gpointer data);
static GDisplay * nav_dialog_get_gdisp (void);
static void nav_dialog_grab_pointer (NavigationDialog *nav_dialog,
GtkWidget *widget);
static void update_zoom_label (NavigationDialog *nav_dialog);
static void update_zoom_adjustment (NavigationDialog *nav_dialog);
static NavigationDialog *nav_window_auto = NULL;
/* public functions */
static void
nav_dialog_marker_changed (GimpNavigationPreview *nav_preview,
gint x,
gint y,
NavigationDialog *nav_dialog)
{
GDisplay *gdisp;
gdouble xratio;
gdouble yratio;
gint xoffset;
gint yoffset;
gdisp = nav_dialog->gdisp;
xratio = SCALEFACTOR_X (gdisp);
yratio = SCALEFACTOR_Y (gdisp);
xoffset = x * xratio - gdisp->offset_x;
yoffset = y * yratio - gdisp->offset_y;
scroll_display (gdisp, xoffset, yoffset);
}
static void
nav_dialog_zoom (GimpNavigationPreview *nav_preview,
GimpZoomType direction,
NavigationDialog *nav_dialog)
{
change_scale (nav_dialog->gdisp, direction);
}
static void
nav_dialog_scroll (GimpNavigationPreview *nav_preview,
GdkScrollDirection direction,
NavigationDialog *nav_dialog)
{
GtkAdjustment *adj = NULL;
gdouble value;
g_print ("nav_dialog_scroll(%d)\n", direction);
switch (direction)
{
case GDK_SCROLL_LEFT:
case GDK_SCROLL_RIGHT:
adj = nav_dialog->gdisp->hsbdata;
break;
case GDK_SCROLL_UP:
case GDK_SCROLL_DOWN:
adj = nav_dialog->gdisp->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);
}
NavigationDialog *
nav_dialog_create (GDisplay *gdisp)
{
NavigationDialog *nav_dialog;
GtkWidget *button_area;
GtkWidget *abox;
gchar *title;
title = nav_dialog_title (gdisp);
nav_dialog = nav_dialog_new (gdisp, NAV_WINDOW);
nav_dialog->shell = gimp_dialog_new (title, "navigation_dialog",
gimp_standard_help_func,
"dialogs/navigation_window.html",
GTK_WIN_POS_MOUSE,
FALSE, TRUE, TRUE,
"_delete_event_",
nav_dialog_close_callback,
nav_dialog, NULL, NULL, TRUE, TRUE,
NULL);
g_free (title);
gtk_dialog_set_has_separator (GTK_DIALOG (nav_dialog->shell), FALSE);
gtk_widget_hide (GTK_DIALOG (nav_dialog->shell)->action_area);
g_object_weak_ref (G_OBJECT (nav_dialog->shell),
(GWeakNotify) g_free,
nav_dialog);
abox = gtk_alignment_new (0.5, 0.5, 0.0, 0.0);
gtk_box_pack_start (GTK_BOX (GTK_DIALOG (nav_dialog->shell)->vbox), abox,
TRUE, TRUE, 0);
gtk_widget_show (abox);
nav_dialog->preview_frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (nav_dialog->preview_frame),
GTK_SHADOW_IN);
gtk_container_add (GTK_CONTAINER (abox), nav_dialog->preview_frame);
gtk_widget_show (nav_dialog->preview_frame);
create_preview_widget (nav_dialog);
{
GtkWidget *frame;
GtkWidget *preview;
abox = gtk_alignment_new (0.5, 0.5, 0.0, 0.0);
gtk_box_pack_start (GTK_BOX (GTK_DIALOG (nav_dialog->shell)->vbox), abox,
TRUE, TRUE, 0);
gtk_widget_show (abox);
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
gtk_container_add (GTK_CONTAINER (abox), frame);
gtk_widget_show (frame);
preview = gimp_navigation_preview_new (gdisp->gimage,
gimprc.nav_preview_size);
gtk_container_add (GTK_CONTAINER (frame), preview);
gtk_widget_show (preview);
g_signal_connect (G_OBJECT (preview), "marker_changed",
G_CALLBACK (nav_dialog_marker_changed),
nav_dialog);
g_signal_connect (G_OBJECT (preview), "zoom",
G_CALLBACK (nav_dialog_zoom),
nav_dialog);
g_signal_connect (G_OBJECT (preview), "scroll",
G_CALLBACK (nav_dialog_scroll),
nav_dialog);
nav_dialog->new_preview = preview;
}
button_area = nav_create_button_area (nav_dialog);
gtk_box_pack_start (GTK_BOX (GTK_DIALOG (nav_dialog->shell)->vbox),
button_area, FALSE, FALSE, 0);
gtk_widget_show (button_area);
if (! g_object_get_data (G_OBJECT (gdisp->gimage), "nav_handlers_installed"))
{
g_signal_connect (G_OBJECT (gdisp->gimage), "dirty",
G_CALLBACK (nav_image_need_update),
nav_dialog);
g_signal_connect (G_OBJECT (gdisp->gimage), "clean",
G_CALLBACK (nav_image_need_update),
nav_dialog);
g_object_set_data (G_OBJECT (gdisp->gimage), "nav_handlers_installed",
nav_dialog);
}
return nav_dialog;
}
void
nav_dialog_free (GDisplay *del_gdisp,
NavigationDialog *nav_dialog)
{
/* So this functions works both ways..
* it will come in here with nav_dialog == null
* if the auto mode is on...
*/
if (! nav_dialog)
{
if (nav_window_auto != NULL)
{
GDisplay *gdisp;
nav_dialog = nav_window_auto;
/* Only freeze if we are displaying the image we have deleted */
if (nav_dialog->gdisp != del_gdisp)
return;
if (nav_dialog->idle_id)
{
g_source_remove (nav_dialog->idle_id);
nav_dialog->idle_id = 0;
}
gdisp = nav_dialog_get_gdisp ();
if (gdisp)
{
nav_dialog_display_changed (NULL, gdisp, nav_window_auto);
}
else
{
/* Clear window and freeze */
nav_dialog->frozen = TRUE;
nav_dialog_update_preview_blank (nav_window_auto);
gtk_window_set_title (GTK_WINDOW (nav_window_auto->shell),
_("Navigation: No Image"));
gtk_widget_set_sensitive (nav_window_auto->shell, FALSE);
nav_window_auto->gdisp = NULL;
gtk_widget_hide (GTK_WIDGET (nav_window_auto->shell));
}
}
return;
}
if (nav_dialog->idle_id)
{
g_source_remove (nav_dialog->idle_id);
nav_dialog->idle_id = 0;
}
gtk_widget_destroy (nav_dialog->shell);
}
void
nav_dialog_popup (NavigationDialog *nav_dialog)
{
if (! nav_dialog)
return;
if (! GTK_WIDGET_VISIBLE (nav_dialog->shell))
{
gtk_widget_show (nav_dialog->shell);
nav_dialog_idle_update_preview (nav_dialog);
}
gdk_window_raise (nav_dialog->shell->window);
}
void
nav_dialog_follow_auto (void)
{
GimpContext *context;
GDisplay *gdisp;
context = gimp_get_user_context (the_gimp);
gdisp = gimp_context_get_display (context);
if (! gdisp)
return;
if (! nav_window_auto)
{
nav_window_auto = nav_dialog_create (gdisp);
g_signal_connect (G_OBJECT (context), "display_changed",
G_CALLBACK (nav_dialog_display_changed),
nav_window_auto);
}
nav_dialog_popup (nav_window_auto);
gtk_widget_set_sensitive (nav_window_auto->shell, TRUE);
nav_window_auto->frozen = FALSE;
}
void
nav_dialog_update_window_marker (NavigationDialog *nav_dialog)
{
/* So this functions works both ways..
* it will come in here with info_win == null
* if the auto mode is on...
*/
if (! nav_dialog && nav_window_auto)
{
nav_dialog = nav_window_auto;
if (nav_dialog->frozen)
return;
nav_dialog_update_window_marker (nav_window_auto);
return;
}
else if (! nav_dialog)
{
return;
}
if (! GTK_WIDGET_VISIBLE (nav_dialog->shell))
return;
update_zoom_label (nav_dialog);
update_zoom_adjustment (nav_dialog);
/* Undraw old size */
nav_dialog_draw_sqr (nav_dialog,
FALSE,
nav_dialog->dispx, nav_dialog->dispy,
nav_dialog->dispwidth, nav_dialog->dispheight);
/* Update to new size */
nav_dialog_disp_area (nav_dialog, nav_dialog->gdisp);
/* and redraw */
nav_dialog_draw_sqr (nav_dialog,
FALSE,
nav_dialog->dispx, nav_dialog->dispy,
nav_dialog->dispwidth, nav_dialog->dispheight);
}
void
nav_dialog_preview_resized (NavigationDialog *nav_dialog)
{
if (! nav_dialog)
return;
/* force regeneration of the widgets
* bit of a fiddle... could cause if the image really is 1x1
* but the preview would not really matter in that case.
*/
nav_dialog->imagewidth = 1;
nav_dialog->imageheight = 1;
nav_dialog->nav_preview_width =
(gimprc.nav_preview_size < 0 || gimprc.nav_preview_size > 256) ?
NAV_PREVIEW_WIDTH : gimprc.nav_preview_size;
nav_dialog->nav_preview_height =
(gimprc.nav_preview_size < 0 || gimprc.nav_preview_size > 256) ?
NAV_PREVIEW_HEIGHT : gimprc.nav_preview_size;
nav_dialog_update_window_marker (nav_dialog);
}
void
nav_popup_click_handler (GtkWidget *widget,
GdkEventButton *event,
gpointer data)
{
GdkEventButton *bevent;
GDisplay *gdisp = data;
NavigationDialog *nav_dialog;
gint x, y;
gint x_org, y_org;
gint scr_w, scr_h;
bevent = (GdkEventButton *) event;
if (! gdisp->nav_popup)
{
GtkWidget *frame;
gdisp->nav_popup = nav_dialog = nav_dialog_new (gdisp, NAV_POPUP);
nav_dialog->shell = gtk_window_new (GTK_WINDOW_POPUP);
gtk_widget_set_events (nav_dialog->shell, PREVIEW_MASK);
g_object_weak_ref (G_OBJECT (nav_dialog->shell),
(GWeakNotify) g_free,
nav_dialog);
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_OUT);
gtk_container_add (GTK_CONTAINER (nav_dialog->shell), frame);
gtk_widget_show (frame);
nav_dialog->preview_frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (nav_dialog->preview_frame),
GTK_SHADOW_IN);
gtk_container_add (GTK_CONTAINER (frame), nav_dialog->preview_frame);
gtk_widget_show (nav_dialog->preview_frame);
create_preview_widget (nav_dialog);
gtk_widget_set_extension_events (nav_dialog->preview,
GDK_EXTENSION_EVENTS_ALL);
nav_dialog_disp_area (nav_dialog, nav_dialog->gdisp);
}
else
{
nav_dialog = gdisp->nav_popup;
gtk_widget_hide (nav_dialog->shell);
nav_dialog_disp_area (nav_dialog, nav_dialog->gdisp);
nav_dialog_update_preview (nav_dialog);
}
/* decide where to put the popup */
gdk_window_get_origin (widget->window, &x_org, &y_org);
scr_w = gdk_screen_width ();
scr_h = gdk_screen_height ();
x = x_org + bevent->x - nav_dialog->dispx -
((nav_dialog->dispwidth - BORDER_PEN_WIDTH + 1) * 0.5) - 2;
y = y_org + bevent->y - nav_dialog->dispy -
((nav_dialog->dispheight - BORDER_PEN_WIDTH + 1)* 0.5) - 2;
/* 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 = (x < 0) ? 0 : x;
y = (y < 0) ? 0 : y;
x = (x + nav_dialog->pwidth > scr_w) ? scr_w - nav_dialog->pwidth - 2: x;
y = (y + nav_dialog->pheight > scr_h) ? scr_h - nav_dialog->pheight - 2: y;
gtk_widget_set_uposition (nav_dialog->shell, x, y);
gtk_widget_show (nav_dialog->shell);
gdk_flush();
/* fill in then set up handlers for mouse motion etc */
nav_dialog->motion_offsetx =
(nav_dialog->dispwidth - BORDER_PEN_WIDTH + 1) * 0.5;
nav_dialog->motion_offsety =
(nav_dialog->dispheight - BORDER_PEN_WIDTH + 1) * 0.5;
if (GTK_WIDGET_VISIBLE (nav_dialog->preview))
nav_dialog_grab_pointer (nav_dialog, nav_dialog->preview);
}
/* private functions */
static NavigationDialog *
nav_dialog_new (GDisplay *gdisp,
NavWinType ptype)
{
NavigationDialog *nav_dialog;
nav_dialog = g_new0 (NavigationDialog, 1);
nav_dialog->ptype = ptype;
nav_dialog->shell = NULL;
nav_dialog->preview = NULL;
nav_dialog->zoom_label = NULL;
nav_dialog->zoom_adjustment = NULL;
nav_dialog->gdisp = gdisp;
nav_dialog->dispx = -1;
nav_dialog->dispy = -1;
nav_dialog->dispwidth = -1;
nav_dialog->dispheight = -1;
nav_dialog->imagewidth = -1;
nav_dialog->imageheight = -1;
nav_dialog->sq_grabbed = FALSE;
nav_dialog->ratio = 1.0;
nav_dialog->nav_preview_width =
(gimprc.nav_preview_size < 0 || gimprc.nav_preview_size > 256) ?
NAV_PREVIEW_WIDTH : gimprc.nav_preview_size;
nav_dialog->nav_preview_height =
(gimprc.nav_preview_size < 0 || gimprc.nav_preview_size > 256) ?
NAV_PREVIEW_HEIGHT : gimprc.nav_preview_size;
nav_dialog->block_adj_sig = FALSE;
nav_dialog->frozen = FALSE;
nav_dialog->idle_id = 0;
return nav_dialog;
}
static gchar *
nav_dialog_title (GDisplay *gdisp)
{
gchar *basename;
gchar *title;
basename = g_path_get_basename (gimp_image_filename (gdisp->gimage));
title = g_strdup_printf (_("Navigation: %s-%d.%d"),
basename,
gimp_image_get_ID (gdisp->gimage),
gdisp->instance);
g_free (basename);
return title;
}
static void
nav_dialog_close_callback (GtkWidget *widget,
gpointer data)
{
NavigationDialog *nav_dialog;
nav_dialog = (NavigationDialog *) data;
gtk_widget_hide (nav_dialog->shell);
}
static void
nav_dialog_disp_area (NavigationDialog *nav_dialog,
GDisplay *gdisp)
{
GimpImage *gimage;
gint newwidth;
gint newheight;
gdouble xratio;
gdouble yratio; /* Screen res ratio */
gboolean need_update = FALSE;
/* Calculate preview size */
gimage = gdisp->gimage;
xratio = SCALEFACTOR_X (gdisp);
yratio = SCALEFACTOR_Y (gdisp);
if (nav_dialog->new_preview)
{
if (GIMP_PREVIEW (nav_dialog->new_preview)->dot_for_dot !=
gdisp->dot_for_dot)
gimp_preview_set_dot_for_dot (GIMP_PREVIEW (nav_dialog->new_preview),
gdisp->dot_for_dot);
gimp_navigation_preview_set_marker
(GIMP_NAVIGATION_PREVIEW (nav_dialog->new_preview),
RINT (gdisp->offset_x / xratio),
RINT (gdisp->offset_y / yratio),
RINT (gdisp->disp_width / xratio),
RINT (gdisp->disp_height / yratio));
}
nav_dialog->dispx = gdisp->offset_x * nav_dialog->ratio / xratio + 0.5;
nav_dialog->dispy = gdisp->offset_y * nav_dialog->ratio/yratio + 0.5;
nav_dialog->dispwidth = (gdisp->disp_width * nav_dialog->ratio) / xratio + 0.5;
nav_dialog->dispheight = (gdisp->disp_height * nav_dialog->ratio) / yratio + 0.5;
newwidth = gimage->width;
newheight = gimage->height;
if (! gdisp->dot_for_dot)
{
newwidth =
(newwidth * gdisp->gimage->yresolution) / gdisp->gimage->xresolution;
nav_dialog->dispx =
((gdisp->offset_x *
gdisp->gimage->yresolution * nav_dialog->ratio) /
(gdisp->gimage->xresolution * xratio)) + 0.5; /*here*/
nav_dialog->dispwidth =
((gdisp->disp_width *
gdisp->gimage->yresolution * nav_dialog->ratio) /
(gdisp->gimage->xresolution * xratio)) + 0.5; /*here*/
}
if ((nav_dialog->imagewidth > 0 && newwidth != nav_dialog->imagewidth) ||
(nav_dialog->imageheight > 0 && newheight != nav_dialog->imageheight))
{
/* Must change the preview size */
if (nav_dialog->ptype != NAV_POPUP)
{
gtk_window_set_focus (GTK_WINDOW (nav_dialog->shell), NULL);
}
gtk_widget_destroy (nav_dialog->preview);
create_preview_widget (nav_dialog);
need_update = TRUE;
}
nav_dialog->imagewidth = newwidth;
nav_dialog->imageheight = newheight;
/* Normalise */
nav_dialog->dispwidth = MAX (nav_dialog->dispwidth, 2);
nav_dialog->dispheight = MAX (nav_dialog->dispheight, 2);
nav_dialog->dispwidth = MIN (nav_dialog->dispwidth, nav_dialog->pwidth);
nav_dialog->dispheight = MIN (nav_dialog->dispheight, nav_dialog->pheight);
if (need_update)
{
if (nav_dialog->ptype != NAV_POPUP)
{
gtk_window_set_focus (GTK_WINDOW (nav_dialog->shell),
nav_dialog->preview);
nav_dialog_idle_update_preview (nav_dialog);
}
else
{
nav_dialog_update_preview (nav_dialog);
gtk_widget_draw (nav_dialog->preview, NULL);
}
}
}
static void
nav_dialog_draw_sqr (NavigationDialog *nav_dialog,
gboolean undraw,
gint x,
gint y,
gint w,
gint h)
{
if (! nav_dialog->gc)
{
if (! GTK_WIDGET_REALIZED (nav_dialog->shell))
gtk_widget_realize (nav_dialog->shell);
nav_dialog->gc = gdk_gc_new (nav_dialog->shell->window);
gdk_gc_set_function (nav_dialog->gc, GDK_INVERT);
gdk_gc_set_line_attributes (nav_dialog->gc, BORDER_PEN_WIDTH,
GDK_LINE_SOLID, GDK_CAP_BUTT, GDK_JOIN_ROUND);
}
if (undraw)
{
if (nav_dialog->dispx != 0 ||
nav_dialog->dispy != 0 ||
nav_dialog->pwidth != nav_dialog->dispwidth ||
nav_dialog->pheight != nav_dialog->dispheight)
{
/* first undraw from last co-ords */
gdk_draw_rectangle (nav_dialog->preview->window, nav_dialog->gc,
FALSE,
nav_dialog->dispx,
nav_dialog->dispy,
nav_dialog->dispwidth - BORDER_PEN_WIDTH + 1,
nav_dialog->dispheight - BORDER_PEN_WIDTH + 1);
}
}
if (x != 0 || y != 0 ||
w != nav_dialog->pwidth || h != nav_dialog->pheight)
{
gdk_draw_rectangle (nav_dialog->preview->window, nav_dialog->gc,
FALSE,
x, y,
w - BORDER_PEN_WIDTH + 1,
h - BORDER_PEN_WIDTH + 1);
}
nav_dialog->dispx = x;
nav_dialog->dispy = y;
nav_dialog->dispwidth = w;
nav_dialog->dispheight = h;
}
static void
set_size_data (NavigationDialog *nav_dialog)
{
GDisplay *gdisp;
GimpImage *gimage;
gint sel_width;
gint sel_height;
gint pwidth;
gint pheight;
gdisp = nav_dialog->gdisp;
gimage = gdisp->gimage;
sel_width = gimage->width;
sel_height = gimage->height;
if (! gdisp->dot_for_dot)
sel_width =
(sel_width * gdisp->gimage->yresolution) / gdisp->gimage->xresolution;
if (sel_width > sel_height)
{
pwidth = nav_dialog->nav_preview_width;
nav_dialog->ratio = (gdouble) pwidth / (gdouble) sel_width;
}
else
{
pheight = nav_dialog->nav_preview_height;
nav_dialog->ratio = (gdouble) pheight / (gdouble) sel_height;
}
pwidth = sel_width * nav_dialog->ratio + 0.5;
pheight = sel_height * nav_dialog->ratio + 0.5;
nav_dialog->pwidth = pwidth;
nav_dialog->pheight = pheight;
}
static void
create_preview_widget (NavigationDialog *nav_dialog)
{
GtkWidget *preview;
preview = gtk_preview_new (GTK_PREVIEW_COLOR);
gtk_widget_set_events (GTK_WIDGET (preview), PREVIEW_MASK);
GTK_WIDGET_SET_FLAGS (preview, GTK_CAN_FOCUS);
gtk_preview_set_dither (GTK_PREVIEW (preview), GDK_RGB_DITHER_MAX);
gtk_container_add (GTK_CONTAINER (nav_dialog->preview_frame), preview);
gtk_widget_show (preview);
nav_dialog->preview = preview;
set_size_data (nav_dialog);
gtk_preview_size (GTK_PREVIEW (preview),
nav_dialog->pwidth, nav_dialog->pheight);
g_signal_connect (G_OBJECT (preview), "event",
G_CALLBACK (nav_dialog_preview_events),
nav_dialog);
}
static gboolean
nav_dialog_update_preview_idle_func (NavigationDialog *nav_dialog)
{
nav_dialog->idle_id = 0;
/* If the gdisp has gone then don't do anything in this timer */
if (! nav_dialog->gdisp)
return FALSE;
nav_dialog_update_preview (nav_dialog);
nav_dialog_disp_area (nav_dialog, nav_dialog->gdisp);
gtk_widget_queue_draw (nav_dialog->preview);
return FALSE;
}
static void
nav_dialog_idle_update_preview (NavigationDialog *nav_dialog)
{
if (nav_dialog->idle_id)
return;
nav_dialog->idle_id =
g_idle_add_full (G_PRIORITY_LOW,
(GSourceFunc) nav_dialog_update_preview_idle_func,
nav_dialog,
NULL);
}
static void
nav_dialog_update_preview (NavigationDialog *nav_dialog)
{
GDisplay *gdisp;
TempBuf *preview_buf;
TempBuf *preview_buf_ptr;
TempBuf *preview_buf_notdot = NULL;
guchar *src, *buf, *dest;
gint x, y;
gint pwidth, pheight;
GimpImage *gimage;
gdouble r, g, b, a, chk;
gint xoff = 0;
gint yoff = 0;
gdisp = nav_dialog->gdisp;
gimage = gdisp->gimage;
gimp_set_busy (gimage->gimp);
/* Min size is 2 */
pwidth = nav_dialog->pwidth;
pheight = nav_dialog->pheight;
/* we need a large normal preview which we will cut down later.
* gimp_image_construct_composite_preview() can't cope with
* dot_for_dot not been set.
*/
if (! gdisp->dot_for_dot)
{
gint sel_width = gimage->width;
gint sel_height = gimage->height;
gdouble tratio;
if (sel_width > sel_height)
tratio = (gdouble) nav_dialog->nav_preview_width / ((gdouble) sel_width);
else
tratio = (gdouble) nav_dialog->nav_preview_height / ((gdouble) sel_height);
pwidth = sel_width * tratio + 0.5;
pheight = sel_height * tratio + 0.5;
}
if (nav_dialog->ratio > 1.0) /* Preview is scaling up! */
{
TempBuf *tmp;
tmp = gimp_viewable_get_new_preview (GIMP_VIEWABLE (gimage),
gimage->width,
gimage->height);
preview_buf = temp_buf_scale (tmp,
pwidth,
pheight);
temp_buf_free (tmp);
}
else
{
preview_buf = gimp_viewable_get_new_preview (GIMP_VIEWABLE (gimage),
MAX (pwidth, 2),
MAX (pheight, 2));
}
/* reset & get new preview
*
* FIXME: should use gimp_preview_scale()
*/
if (! gdisp->dot_for_dot)
{
gint loop1, loop2;
gdouble x_ratio, y_ratio;
guchar *src_data;
guchar *dest_data;
preview_buf_notdot = temp_buf_new (nav_dialog->pwidth,
nav_dialog->pheight,
preview_buf->bytes,
0, 0, NULL);
x_ratio = (gdouble) pwidth / (gdouble) nav_dialog->pwidth;
y_ratio = (gdouble) pheight / (gdouble) nav_dialog->pheight;
src_data = temp_buf_data (preview_buf);
dest_data = temp_buf_data (preview_buf_notdot);
for (loop1 = 0 ; loop1 < nav_dialog->pheight ; loop1++)
for (loop2 = 0 ; loop2 < nav_dialog->pwidth ; loop2++)
{
gint i;
guchar *src_pixel;
guchar *dest_pixel;
src_pixel = src_data +
((gint) (loop2 * x_ratio)) * preview_buf->bytes +
((gint) (loop1 * y_ratio)) * pwidth * preview_buf->bytes;
dest_pixel = dest_data +
(loop2 + loop1 * nav_dialog->pwidth) * preview_buf->bytes;
for (i = 0 ; i < preview_buf->bytes; i++)
*dest_pixel++ = *src_pixel++;
}
pwidth = nav_dialog->pwidth;
pheight = nav_dialog->pheight;
src = temp_buf_data (preview_buf_notdot);
preview_buf_ptr = preview_buf_notdot;
}
else
{
src = temp_buf_data (preview_buf);
preview_buf_ptr = preview_buf;
}
buf = g_new (gchar, preview_buf_ptr->width * 3);
for (y = 0; y < preview_buf_ptr->height ; y++)
{
dest = buf;
switch (preview_buf_ptr->bytes)
{
case 4:
for (x = 0; x < preview_buf_ptr->width; x++)
{
r = ((gdouble) (*(src++))) / 255.0;
g = ((gdouble) (*(src++))) / 255.0;
b = ((gdouble) (*(src++))) / 255.0;
a = ((gdouble) (*(src++))) / 255.0;
chk = ((gdouble) ((( (x^y) & 4 ) << 4) | 128)) / 255.0;
*(dest++) = (guchar) ((chk + (r - chk) * a) * 255.0);
*(dest++) = (guchar) ((chk + (g - chk) * a) * 255.0);
*(dest++) = (guchar) ((chk + (b - chk) * a) * 255.0);
}
break;
case 2:
for (x = 0; x < preview_buf_ptr->width; x++)
{
r = ((gdouble) (*(src++))) / 255.0;
a = ((gdouble) (*(src++))) / 255.0;
chk = ((gdouble) ((( (x^y) & 4 ) << 4) | 128)) / 255.0;
*(dest++) = (guchar) ((chk + (r - chk) * a) * 255.0);
*(dest++) = (guchar) ((chk + (r - chk) * a) * 255.0);
*(dest++) = (guchar) ((chk + (r - chk) * a) * 255.0);
}
break;
default:
g_warning ("nav_dialog_update_preview(): UNKNOWN TempBuf bpp");
}
gtk_preview_draw_row (GTK_PREVIEW (nav_dialog->preview),
buf,
xoff, yoff + y,
preview_buf_ptr->width);
}
g_free (buf);
temp_buf_free (preview_buf);
if (preview_buf_notdot)
temp_buf_free (preview_buf_notdot);
gimp_unset_busy (gimage->gimp);
}
static void
nav_dialog_update_preview_blank (NavigationDialog *nav_dialog)
{
guchar *buf;
guchar *dest;
gint x, y;
gdouble chk;
buf = g_new (gchar, nav_dialog->pwidth * 3);
for (y = 0; y < nav_dialog->pheight ; y++)
{
dest = buf;
for (x = 0; x < nav_dialog->pwidth; x++)
{
chk = ((gdouble) ((( (x^y) & 4 ) << 4) | 128)) / 255.0;
chk *= 128.0;
*(dest++) = (guchar) chk;
*(dest++) = (guchar) chk;
*(dest++) = (guchar) chk;
}
gtk_preview_draw_row (GTK_PREVIEW (nav_dialog->preview),
buf,
0, y, nav_dialog->pwidth);
}
g_free (buf);
}
static void
update_zoom_label (NavigationDialog *nav_dialog)
{
gchar scale_str[MAX_SCALE_BUF];
if (! nav_dialog->zoom_label)
return;
/* Update the zoom scale string */
g_snprintf (scale_str, MAX_SCALE_BUF, "%d:%d",
SCALEDEST (nav_dialog->gdisp),
SCALESRC (nav_dialog->gdisp));
gtk_label_set_text (GTK_LABEL (nav_dialog->zoom_label), scale_str);
}
static void
update_zoom_adjustment (NavigationDialog *nav_dialog)
{
GtkAdjustment *adj;
gdouble f;
gdouble val;
if (! nav_dialog->zoom_adjustment)
return;
adj = GTK_ADJUSTMENT (nav_dialog->zoom_adjustment);
f = (((gdouble) SCALEDEST (nav_dialog->gdisp)) /
((gdouble) SCALESRC (nav_dialog->gdisp)));
if (f < 1.0)
{
val = -1.0 / f;
}
else
{
val = f;
}
if (abs ((gint) adj->value) != (gint) (val - 1) &&
! nav_dialog->block_adj_sig)
{
adj->value = val;
gtk_adjustment_changed (GTK_ADJUSTMENT (nav_dialog->zoom_adjustment));
}
}
static void
nav_dialog_update_real_view (NavigationDialog *nav_dialog,
gint tx,
gint ty)
{
GDisplay *gdisp;
gdouble xratio;
gdouble yratio;
gint xoffset;
gint yoffset;
gint xpnt;
gint ypnt;
gdisp = nav_dialog->gdisp;
xratio = SCALEFACTOR_X (gdisp);
yratio = SCALEFACTOR_Y (gdisp);
if ((tx + nav_dialog->dispwidth) >= nav_dialog->pwidth)
{
tx = nav_dialog->pwidth; /* Actually should be less...
* but bound check will save us.
*/
}
xpnt = (gint) (((gdouble) (tx) * xratio) / nav_dialog->ratio + 0.5);
if ((ty + nav_dialog->dispheight) >= nav_dialog->pheight)
{
ty = nav_dialog->pheight; /* Same comment as for xpnt above. */
}
ypnt = (gint) (((gdouble) (ty) * yratio) / nav_dialog->ratio + 0.5);
if (! gdisp->dot_for_dot) /* here */
xpnt = ((gdouble) xpnt *
gdisp->gimage->xresolution) / gdisp->gimage->yresolution + 0.5;
xoffset = xpnt - gdisp->offset_x;
yoffset = ypnt - gdisp->offset_y;
scroll_display (nav_dialog->gdisp, xoffset, yoffset);
}
static void
nav_dialog_move_to_point (NavigationDialog *nav_dialog,
gint tx,
gint ty)
{
tx = CLAMP (tx, 0, nav_dialog->pwidth);
ty = CLAMP (ty, 0, nav_dialog->pheight);
if ((tx + nav_dialog->dispwidth) >= nav_dialog->pwidth)
{
tx = nav_dialog->pwidth - nav_dialog->dispwidth;
}
if ((ty + nav_dialog->dispheight) >= nav_dialog->pheight)
{
ty = nav_dialog->pheight - nav_dialog->dispheight;
}
if (nav_dialog->dispx == tx && nav_dialog->dispy == ty)
return;
nav_dialog_update_real_view (nav_dialog, tx, ty);
}
static void
nav_dialog_grab_pointer (NavigationDialog *nav_dialog,
GtkWidget *widget)
{
GdkCursor *cursor;
nav_dialog->sq_grabbed = TRUE;
gtk_grab_add (widget);
cursor = gdk_cursor_new (GDK_CROSSHAIR);
gdk_pointer_grab (widget->window, TRUE,
GDK_BUTTON_RELEASE_MASK |
GDK_POINTER_MOTION_HINT_MASK |
GDK_BUTTON_MOTION_MASK |
GDK_EXTENSION_EVENTS_ALL,
widget->window, cursor, 0);
gdk_cursor_unref (cursor);
}
static gboolean
nav_dialog_inside_preview_square (NavigationDialog *nav_dialog,
gint x,
gint y)
{
return (x > nav_dialog->dispx &&
x < nav_dialog->dispx + nav_dialog->dispwidth &&
y > nav_dialog->dispy &&
y < nav_dialog->dispy + nav_dialog->dispheight);
}
static gboolean
nav_dialog_preview_events (GtkWidget *widget,
GdkEvent *event,
gpointer data)
{
NavigationDialog *nav_dialog;
GDisplay *gdisp;
GdkEventButton *bevent;
GdkEventMotion *mevent;
GdkEventKey *kevent;
GdkModifierType mask;
gint tx = 0;
gint ty = 0;
gint mx;
gint my;
gboolean arrow_key = FALSE;
nav_dialog = (NavigationDialog *) data;
if (! nav_dialog || nav_dialog->frozen)
return FALSE;
gdisp = nav_dialog->gdisp;
switch (event->type)
{
case GDK_EXPOSE:
/* call default handler explicitly, then draw the square */
GTK_WIDGET_GET_CLASS (widget)->expose_event (widget,
(GdkEventExpose *) event);
nav_dialog_draw_sqr (nav_dialog, FALSE,
nav_dialog->dispx, nav_dialog->dispy,
nav_dialog->dispwidth, nav_dialog->dispheight);
return TRUE;
case GDK_MAP:
if (nav_dialog->ptype == NAV_POPUP)
{
nav_dialog_update_preview (nav_dialog);
/* First time displayed.... get the pointer! */
nav_dialog_grab_pointer (nav_dialog, nav_dialog->preview);
}
else
{
nav_dialog_idle_update_preview (nav_dialog);
}
break;
case GDK_BUTTON_PRESS:
bevent = (GdkEventButton *) event;
tx = bevent->x;
ty = bevent->y;
/* Must start the move */
switch (bevent->button)
{
case 1:
if (! nav_dialog_inside_preview_square (nav_dialog, tx, ty))
{
/* Direct scroll to the location
* view scrolled to the center or nearest possible point
*/
tx -= nav_dialog->dispwidth / 2;
ty -= nav_dialog->dispheight / 2;
nav_dialog_move_to_point (nav_dialog, tx, ty);
nav_dialog->motion_offsetx = nav_dialog->dispwidth / 2;
nav_dialog->motion_offsety = nav_dialog->dispheight / 2;
}
else
{
nav_dialog->motion_offsetx = tx - nav_dialog->dispx;
nav_dialog->motion_offsety = ty - nav_dialog->dispy;
}
nav_dialog_grab_pointer (nav_dialog, widget);
break;
/* wheelmouse support */
case 4:
if (bevent->state & GDK_SHIFT_MASK)
{
change_scale (gdisp, GIMP_ZOOM_IN);
}
else
{
GtkAdjustment *adj =
(bevent->state & GDK_CONTROL_MASK) ?
gdisp->hsbdata : gdisp->vsbdata;
gfloat new_value = adj->value - adj->page_increment / 2;
new_value =
CLAMP (new_value, adj->lower, adj->upper - adj->page_size);
gtk_adjustment_set_value (adj, new_value);
}
break;
case 5:
if (bevent->state & GDK_SHIFT_MASK)
{
change_scale (gdisp, GIMP_ZOOM_OUT);
}
else
{
GtkAdjustment *adj =
(bevent->state & GDK_CONTROL_MASK) ?
gdisp->hsbdata : gdisp->vsbdata;
gfloat new_value = adj->value + adj->page_increment / 2;
new_value = CLAMP (new_value,
adj->lower, adj->upper - adj->page_size);
gtk_adjustment_set_value (adj, new_value);
}
break;
default:
break;
}
break;
case GDK_BUTTON_RELEASE:
bevent = (GdkEventButton *) event;
tx = bevent->x;
ty = bevent->y;
switch (bevent->button)
{
case 1:
nav_dialog->sq_grabbed = FALSE;
gtk_grab_remove (widget);
gdk_pointer_ungrab (0);
if (nav_dialog->ptype == NAV_POPUP)
{
gtk_widget_hide (nav_dialog->shell);
}
gdk_flush ();
break;
default:
break;
}
break;
case GDK_KEY_PRESS:
/* hack for the update preview... needs to be fixed */
kevent = (GdkEventKey *) event;
switch (kevent->keyval)
{
case GDK_space:
gdk_window_raise (gdisp->shell->window);
break;
case GDK_Up:
arrow_key = TRUE;
tx = nav_dialog->dispx;
ty = nav_dialog->dispy - 1;
break;
case GDK_Left:
arrow_key = TRUE;
tx = nav_dialog->dispx - 1;
ty = nav_dialog->dispy;
break;
case GDK_Right:
arrow_key = TRUE;
tx = nav_dialog->dispx + 1;
ty = nav_dialog->dispy;
break;
case GDK_Down:
arrow_key = TRUE;
tx = nav_dialog->dispx;
ty = nav_dialog->dispy + 1;
break;
case GDK_equal:
change_scale (gdisp, GIMP_ZOOM_IN);
break;
case GDK_minus:
change_scale (gdisp, GIMP_ZOOM_OUT);
break;
default:
break;
}
if (arrow_key)
{
nav_dialog_move_to_point (nav_dialog, tx, ty);
return TRUE;
}
break;
case GDK_MOTION_NOTIFY:
mevent = (GdkEventMotion *) event;
if (! nav_dialog->sq_grabbed)
break;
gdk_window_get_pointer (widget->window, &mx, &my, &mask);
tx = mx;
ty = my;
tx = tx - nav_dialog->motion_offsetx;
ty = ty - nav_dialog->motion_offsety;
nav_dialog_move_to_point (nav_dialog, tx, ty);
break;
default:
break;
}
return FALSE;
}
static void
nav_image_need_update (GimpImage *gimage,
gpointer data)
{
NavigationDialog *nav_dialog;
nav_dialog = (NavigationDialog *) data;
if (! nav_dialog ||
! GTK_WIDGET_VISIBLE (nav_dialog->shell) ||
nav_dialog->frozen)
return;
nav_dialog_idle_update_preview (nav_dialog);
}
static void
navwindow_zoomin (GtkWidget *widget,
gpointer data)
{
NavigationDialog *nav_dialog;
nav_dialog = (NavigationDialog *) data;
if(! nav_dialog || nav_dialog->frozen)
return;
change_scale (nav_dialog->gdisp, GIMP_ZOOM_IN);
}
static void
navwindow_zoomout (GtkWidget *widget,
gpointer data)
{
NavigationDialog *nav_dialog;
nav_dialog = (NavigationDialog *)data;
if (! nav_dialog || nav_dialog->frozen)
return;
change_scale (nav_dialog->gdisp, GIMP_ZOOM_OUT);
}
static void
zoom_adj_changed (GtkAdjustment *adj,
gpointer data)
{
NavigationDialog *nav_dialog;
gint scalesrc;
gint scaledest;
nav_dialog = (NavigationDialog *)data;
if (! nav_dialog || nav_dialog->frozen)
return;
if (adj->value < 0.0)
{
scalesrc = abs ((gint) adj->value - 1);
scaledest = 1;
}
else
{
scaledest = abs ((gint) adj->value + 1);
scalesrc = 1;
}
nav_dialog->block_adj_sig = TRUE;
change_scale (nav_dialog->gdisp, (scaledest * 100) + scalesrc);
nav_dialog->block_adj_sig = FALSE;
}
static GtkWidget *
nav_create_button_area (NavigationDialog *nav_dialog)
{
GtkWidget *hbox;
GtkWidget *vbox;
GtkWidget *button;
GtkWidget *hscale;
gchar scale_str[MAX_SCALE_BUF];
vbox = gtk_vbox_new (FALSE, 0);
hbox = gtk_hbox_new (FALSE, 0);
gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
gtk_widget_show (hbox);
button = gimp_pixmap_button_new (zoom_out_xpm, NULL);
GTK_WIDGET_UNSET_FLAGS (button, GTK_RECEIVES_DEFAULT);
gtk_box_pack_start (GTK_BOX (hbox), button, FALSE, FALSE, 0);
gtk_widget_show (button);
g_signal_connect (G_OBJECT (button), "clicked",
G_CALLBACK (navwindow_zoomout),
nav_dialog);
/* user zoom ratio */
g_snprintf (scale_str, MAX_SCALE_BUF, "%d:%d",
SCALEDEST (nav_dialog->gdisp),
SCALESRC (nav_dialog->gdisp));
nav_dialog->zoom_label = gtk_label_new (scale_str);
gtk_box_pack_start (GTK_BOX (hbox), nav_dialog->zoom_label, TRUE, TRUE, 0);
gtk_widget_show (nav_dialog->zoom_label);
button = gimp_pixmap_button_new (zoom_in_xpm, NULL);
GTK_WIDGET_UNSET_FLAGS (button, GTK_RECEIVES_DEFAULT);
gtk_box_pack_start (GTK_BOX (hbox), button, FALSE, FALSE, 0);
gtk_widget_show (button);
g_signal_connect (G_OBJECT (button), "clicked",
G_CALLBACK (navwindow_zoomin),
nav_dialog);
nav_dialog->zoom_adjustment =
gtk_adjustment_new (0.0, -15.0, 16.0, 1.0, 1.0, 1.0);
g_signal_connect (G_OBJECT (nav_dialog->zoom_adjustment), "value_changed",
G_CALLBACK (zoom_adj_changed),
nav_dialog);
hscale = gtk_hscale_new (GTK_ADJUSTMENT (nav_dialog->zoom_adjustment));
gtk_scale_set_draw_value (GTK_SCALE (hscale), FALSE);
gtk_scale_set_digits (GTK_SCALE (hscale), 0);
gtk_box_pack_start (GTK_BOX (vbox), hscale, TRUE, TRUE, 0);
gtk_widget_show (hscale);
return vbox;
}
static void
nav_dialog_display_changed (GimpContext *context,
GDisplay *gdisp,
gpointer data)
{
GDisplay *old_gdisp;
GimpImage *gimage;
NavigationDialog *nav_dialog;
gchar *title;
nav_dialog = (NavigationDialog *) data;
old_gdisp = nav_dialog->gdisp;
if (! nav_dialog || gdisp == old_gdisp || ! gdisp)
return;
gtk_widget_set_sensitive (nav_window_auto->shell, TRUE);
nav_dialog->frozen = FALSE;
title = nav_dialog_title (gdisp);
gtk_window_set_title (GTK_WINDOW (nav_dialog->shell), title);
g_free (title);
gimage = gdisp->gimage;
if (gimage && gimp_container_have (context->gimp->images,
GIMP_OBJECT (gimage)))
{
nav_dialog->gdisp = gdisp;
/* Update preview to new display */
nav_dialog_preview_resized (nav_dialog);
if (nav_dialog->new_preview)
gimp_preview_set_viewable (GIMP_PREVIEW (nav_dialog->new_preview),
GIMP_VIEWABLE (gdisp->gimage));
/* Tie into the dirty signal so we can update the preview
* provided we haven't already
*/
if (! g_object_get_data (G_OBJECT (gimage), "nav_handlers_installed"))
{
g_signal_connect (G_OBJECT (gimage), "dirty",
G_CALLBACK (nav_image_need_update),
nav_dialog);
g_signal_connect (G_OBJECT (gimage), "clean",
G_CALLBACK (nav_image_need_update),
nav_dialog);
g_object_set_data (G_OBJECT (gimage),
"nav_handlers_installed",
nav_dialog);
}
}
}
static GDisplay *
nav_dialog_get_gdisp (void)
{
GList *list;
for (list = GIMP_LIST (the_gimp->images)->list;
list;
list = g_list_next (list))
{
GimpImage *gimage;
GDisplay *gdisp;
gimage = GIMP_IMAGE (list->data);
gdisp = gdisplays_check_valid (NULL, gimage);
if (gdisp)
return gdisp;
}
return NULL;
}
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