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537 lines
14 KiB
C
537 lines
14 KiB
C
/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*-
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eel-debug-drawing.c: Eel drawing debugging aids.
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Copyright (C) 2000 Eazel, Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with this program; if not, write to the
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Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA.
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Author: Ramiro Estrugo <ramiro@eazel.com>
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*/
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#include <config.h>
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#include "eel-debug-drawing.h"
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#include "eel-art-gtk-extensions.h"
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#include "eel-debug.h"
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#include "eel-gdk-extensions.h"
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#include "eel-gdk-extensions.h"
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#include "eel-gdk-pixbuf-extensions.h"
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#include "eel-gtk-extensions.h"
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#include "eel-gtk-extensions.h"
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#include "eel-gtk-macros.h"
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#include <gtk/gtk.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <stdio.h>
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/*
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* PixbufViewer is a very simple "private" widget that displays
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* a GdkPixbuf. It is used by eel_debug_show_pixbuf() to
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* display a pixbuf in an in process pixbuf debugging window.
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*
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* We cant use EelImage for this because part of the reason
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* for pixbuf debugging is to debug EelImage itself.
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*/
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#define DEBUG_TYPE_PIXBUF_VIEWER debug_pixbuf_viewer_get_type()
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#define DEBUG_PIXBUF_VIEWER(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST ((obj), DEBUG_TYPE_PIXBUF_VIEWER, DebugPixbufViewer))
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#define DEBUG_IS_PIXBUF_VIEWER(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE ((obj), DEBUG_TYPE_PIXBUF_VIEWER))
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typedef struct DebugPixbufViewer DebugPixbufViewer;
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typedef struct DebugPixbufViewerClass DebugPixbufViewerClass;
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static GType debug_pixbuf_viewer_get_type (void);
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static void debug_pixbuf_viewer_set_pixbuf (DebugPixbufViewer *viewer,
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GdkPixbuf *pixbuf);
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struct DebugPixbufViewer
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{
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GtkWidget widget;
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GdkPixbuf *pixbuf;
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};
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struct DebugPixbufViewerClass
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{
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GtkWidgetClass parent_class;
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};
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/* GtkObjectClass methods */
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static void debug_pixbuf_viewer_class_init (DebugPixbufViewerClass *pixbuf_viewer_class);
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static void debug_pixbuf_viewer_init (DebugPixbufViewer *pixbuf_viewer);
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static void debug_pixbuf_viewer_finalize (GObject *object);
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/* GtkWidgetClass methods */
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static void debug_pixbuf_viewer_size_request (GtkWidget *widget,
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GtkRequisition *requisition);
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static int debug_pixbuf_viewer_expose_event (GtkWidget *widget,
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GdkEventExpose *event);
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EEL_CLASS_BOILERPLATE (DebugPixbufViewer, debug_pixbuf_viewer, GTK_TYPE_WIDGET)
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static void
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debug_pixbuf_viewer_class_init (DebugPixbufViewerClass *pixbuf_viewer_class)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (pixbuf_viewer_class);
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GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (pixbuf_viewer_class);
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object_class->finalize = debug_pixbuf_viewer_finalize;
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widget_class->size_request = debug_pixbuf_viewer_size_request;
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widget_class->expose_event = debug_pixbuf_viewer_expose_event;
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}
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static void
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debug_pixbuf_viewer_init (DebugPixbufViewer *viewer)
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{
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gtk_widget_set_can_focus (GTK_WIDGET (viewer), FALSE);
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gtk_widget_set_has_window (GTK_WIDGET (viewer), FALSE);
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}
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static void
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debug_pixbuf_viewer_finalize (GObject *object)
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{
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DebugPixbufViewer *viewer;
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viewer = DEBUG_PIXBUF_VIEWER (object);
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eel_gdk_pixbuf_unref_if_not_null (viewer->pixbuf);
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viewer->pixbuf = NULL;
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EEL_CALL_PARENT (G_OBJECT_CLASS, finalize, (object));
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}
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static void
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debug_pixbuf_viewer_size_request (GtkWidget *widget, GtkRequisition *requisition)
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{
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DebugPixbufViewer *viewer;
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EelDimensions dimensions;
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g_assert (DEBUG_IS_PIXBUF_VIEWER (widget));
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g_assert (requisition != NULL);
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viewer = DEBUG_PIXBUF_VIEWER (widget);
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if (viewer->pixbuf != NULL) {
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dimensions = eel_gdk_pixbuf_get_dimensions (viewer->pixbuf);
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} else {
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dimensions = eel_dimensions_empty;
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}
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requisition->width = MAX (2, dimensions.width);
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requisition->height = MAX (2, dimensions.height);
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}
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static int
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debug_pixbuf_viewer_expose_event (GtkWidget *widget, GdkEventExpose *event)
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{
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DebugPixbufViewer *viewer;
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EelIRect clipped_dirty_area;
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EelIRect dirty_area;
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EelIRect bounds;
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GtkAllocation allocation;
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g_assert (DEBUG_IS_PIXBUF_VIEWER (widget));
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g_assert (event != NULL);
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g_assert (event->window == gtk_widget_get_window (widget));
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g_assert (gtk_widget_get_realized (widget));
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viewer = DEBUG_PIXBUF_VIEWER (widget);
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if (viewer->pixbuf == NULL) {
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return TRUE;
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}
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gtk_widget_get_allocation (widget, &allocation);
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bounds.x0 = allocation.x + (allocation.width - gdk_pixbuf_get_width (viewer->pixbuf)) / 2;
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bounds.y0 = allocation.y + (allocation.height - gdk_pixbuf_get_height (viewer->pixbuf)) / 2;
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bounds.x1 = bounds.x0 + gdk_pixbuf_get_width (viewer->pixbuf);
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bounds.y1 = bounds.y0 + gdk_pixbuf_get_height (viewer->pixbuf);
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/* Clip the dirty area to the screen; bail if no work to do */
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dirty_area = eel_gdk_rectangle_to_eel_irect (event->area);
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clipped_dirty_area = eel_gdk_window_clip_dirty_area_to_screen (event->window,
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dirty_area);
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if (!eel_irect_is_empty (&clipped_dirty_area)) {
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EelIRect clipped_bounds;
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eel_irect_intersect (&clipped_bounds, &bounds, &clipped_dirty_area);
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if (!eel_irect_is_empty (&clipped_bounds)) {
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g_assert (clipped_bounds.x0 >= bounds.x0);
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g_assert (clipped_bounds.y0 >= bounds.y0);
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eel_gdk_pixbuf_draw_to_drawable (viewer->pixbuf,
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event->window,
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gtk_widget_get_style (widget)->white_gc,
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clipped_bounds.x0 - bounds.x0,
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clipped_bounds.y0 - bounds.y0,
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clipped_bounds,
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GDK_RGB_DITHER_NONE,
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GDK_PIXBUF_ALPHA_BILEVEL,
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EEL_STANDARD_ALPHA_THRESHHOLD);
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}
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}
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bounds.x0 -= 1;
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bounds.y0 -= 1;
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bounds.x1 += 1;
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bounds.y1 += 1;
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return TRUE;
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}
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static void
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debug_pixbuf_viewer_set_pixbuf (DebugPixbufViewer *viewer, GdkPixbuf *pixbuf)
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{
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g_assert (DEBUG_IS_PIXBUF_VIEWER (viewer));
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if (pixbuf != viewer->pixbuf) {
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eel_gdk_pixbuf_unref_if_not_null (viewer->pixbuf);
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eel_gdk_pixbuf_ref_if_not_null (pixbuf);
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viewer->pixbuf = pixbuf;
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gtk_widget_queue_resize (GTK_WIDGET (viewer));
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}
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}
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/**
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* eel_debug_draw_rectangle_and_cross:
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* @rectangle: Rectangle bounding the rectangle.
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* @color: Color to use for the rectangle and cross.
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*
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* Draw a rectangle and cross. Useful for debugging exposure events.
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*/
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void
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eel_debug_draw_rectangle_and_cross (GdkDrawable *drawable,
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EelIRect rectangle,
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guint32 color,
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gboolean draw_cross)
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{
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GdkGC *gc;
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GdkColor color_gdk = { 0 };
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int width;
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int height;
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g_return_if_fail (drawable != NULL);
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g_return_if_fail (!eel_irect_is_empty (&rectangle));
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width = rectangle.x1 - rectangle.x0;
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height = rectangle.y1 - rectangle.y0;
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gc = gdk_gc_new (drawable);
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gdk_gc_set_function (gc, GDK_COPY);
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color_gdk.red = ((color >> 16) & 0xff) << 8;
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color_gdk.green = ((color >> 8) & 0xff) << 8;
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color_gdk.blue = ((color ) & 0xff) << 8;
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gdk_colormap_alloc_color (
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gdk_drawable_get_colormap (drawable),
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&color_gdk, FALSE, FALSE);
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gdk_gc_set_rgb_fg_color (gc, &color_gdk);
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gdk_draw_rectangle (drawable,
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gc,
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FALSE,
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rectangle.x0,
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rectangle.y0,
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width - 1,
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height - 1);
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if (draw_cross) {
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gdk_draw_line (drawable,
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gc,
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rectangle.x0,
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rectangle.y0,
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rectangle.x0 + width - 1,
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rectangle.y0 + height - 1);
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gdk_draw_line (drawable,
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gc,
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rectangle.x0 + width - 1,
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rectangle.y0,
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rectangle.x0,
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rectangle.y0 + height - 1);
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}
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g_object_unref (gc);
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}
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/**
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* eel_debug_show_pixbuf_in_external_viewer:
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* @pixbuf: Pixbuf to show.
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* @viewer_name: Viewer name.
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*
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* Show the given pixbuf in an external out of process viewer.
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* This is very useful for debugging pixbuf stuff.
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*
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* Perhaps this function should be #ifdef DEBUG or something like that.
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*/
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void
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eel_debug_show_pixbuf_in_external_viewer (const GdkPixbuf *pixbuf,
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const char *viewer_name)
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{
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char *command;
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char *file_name;
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gboolean save_result;
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int ignore;
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int fd;
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g_return_if_fail (pixbuf != NULL);
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g_return_if_fail (viewer_name != NULL);
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file_name = g_strdup ("/tmp/eel-debug-png-file-XXXXXX");
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fd = g_mkstemp (file_name);
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if (fd == -1) {
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g_free (file_name);
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file_name = g_strdup_printf ("/tmp/isis-debug-png-file-%d", getpid ());
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} else {
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close (fd);
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}
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save_result = eel_gdk_pixbuf_save_to_file (pixbuf, file_name);
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if (save_result == FALSE) {
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g_warning ("Failed to save '%s'", file_name);
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g_free (file_name);
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return;
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}
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command = g_strdup_printf ("%s %s", viewer_name, file_name);
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ignore = system (command);
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g_free (command);
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remove (file_name);
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g_free (file_name);
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}
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static GtkWidget *debug_window = NULL;
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static GtkWidget *debug_image = NULL;
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static void
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debug_delete_event (GtkWidget *widget, GdkEvent *event, gpointer callback_data)
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{
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gtk_widget_hide (widget);
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}
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static void
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destroy_debug_window (void)
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{
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if (debug_window != NULL) {
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gtk_widget_destroy (debug_window);
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debug_window = NULL;
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}
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}
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/**
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* eel_debug_show_pixbuf_in:
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* @pixbuf: Pixbuf to show.
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*
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* Show the given pixbuf in an in process window.
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*/
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void
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eel_debug_show_pixbuf (GdkPixbuf *pixbuf)
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{
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if (debug_window == NULL) {
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GtkWidget *vbox;
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debug_window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
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vbox = gtk_vbox_new (FALSE, 0);
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gtk_container_add (GTK_CONTAINER (debug_window), vbox);
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gtk_window_set_title (GTK_WINDOW (debug_window), "Pixbuf debugging");
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gtk_window_set_resizable (GTK_WINDOW (debug_window), TRUE);
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gtk_container_set_border_width (GTK_CONTAINER (debug_window), 10);
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g_signal_connect (debug_window, "delete_event", G_CALLBACK (debug_delete_event), NULL);
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debug_image = gtk_widget_new (debug_pixbuf_viewer_get_type (), NULL);
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gtk_box_pack_start (GTK_BOX (vbox), debug_image, TRUE, TRUE, 0);
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eel_gtk_widget_set_background_color (debug_window, "white");
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eel_debug_call_at_shutdown (destroy_debug_window);
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gtk_widget_show (debug_image);
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gtk_widget_show (vbox);
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}
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gtk_widget_show (debug_window);
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debug_pixbuf_viewer_set_pixbuf (DEBUG_PIXBUF_VIEWER (debug_image), pixbuf);
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gdk_window_clear_area_e (gtk_widget_get_window (debug_window), 0, 0, -1, -1);
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}
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void
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eel_debug_pixbuf_draw_point (GdkPixbuf *pixbuf,
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int x,
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int y,
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guint32 color,
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int opacity)
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{
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EelDimensions dimensions;
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guchar *pixels;
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gboolean has_alpha;
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guint pixel_offset;
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guint rowstride;
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guchar red;
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guchar green;
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guchar blue;
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guchar alpha;
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guchar *offset;
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g_return_if_fail (eel_gdk_pixbuf_is_valid (pixbuf));
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g_return_if_fail (opacity >= EEL_OPACITY_FULLY_TRANSPARENT);
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g_return_if_fail (opacity <= EEL_OPACITY_FULLY_OPAQUE);
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dimensions = eel_gdk_pixbuf_get_dimensions (pixbuf);
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g_return_if_fail (x >= 0 && x < dimensions.width);
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g_return_if_fail (y >= 0 && y < dimensions.height);
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pixels = gdk_pixbuf_get_pixels (pixbuf);
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rowstride = gdk_pixbuf_get_rowstride (pixbuf);
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has_alpha = gdk_pixbuf_get_has_alpha (pixbuf);
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pixel_offset = has_alpha ? 4 : 3;
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red = EEL_RGBA_COLOR_GET_R (color);
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green = EEL_RGBA_COLOR_GET_G (color);
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blue = EEL_RGBA_COLOR_GET_B (color);
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alpha = (guchar) opacity;
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offset = pixels + y * rowstride + x * pixel_offset;
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*(offset + 0) = red;
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*(offset + 1) = green;
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*(offset + 2) = blue;
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if (has_alpha) {
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*(offset + 3) = alpha;
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}
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}
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void
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eel_debug_pixbuf_draw_rectangle (GdkPixbuf *pixbuf,
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gboolean filled,
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int x0,
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int y0,
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int x1,
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int y1,
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guint32 color,
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int opacity)
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{
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EelDimensions dimensions;
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int x;
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int y;
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g_return_if_fail (eel_gdk_pixbuf_is_valid (pixbuf));
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g_return_if_fail (opacity >= EEL_OPACITY_FULLY_TRANSPARENT);
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g_return_if_fail (opacity <= EEL_OPACITY_FULLY_OPAQUE);
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dimensions = eel_gdk_pixbuf_get_dimensions (pixbuf);
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if (x0 == -1) {
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x0 = 0;
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}
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if (y0 == -1) {
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y0 = 0;
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}
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if (x1 == -1) {
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x1 = dimensions.width - 1;
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}
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if (y1 == -1) {
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y1 = dimensions.height - 1;
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}
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g_return_if_fail (x1 > x0);
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g_return_if_fail (y1 > y0);
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g_return_if_fail (x0 >= 0 && x0 < dimensions.width);
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g_return_if_fail (y0 >= 0 && y0 < dimensions.height);
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g_return_if_fail (x1 >= 0 && x1 < dimensions.width);
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g_return_if_fail (y1 >= 0 && y1 < dimensions.height);
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if (filled) {
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for (y = y0; y <= y1; y++) {
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for (x = x0; x <= x1; x++) {
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eel_debug_pixbuf_draw_point (pixbuf, x, y, color, opacity);
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}
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}
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} else {
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/* Top / Bottom */
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for (x = x0; x <= x1; x++) {
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eel_debug_pixbuf_draw_point (pixbuf, x, y0, color, opacity);
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eel_debug_pixbuf_draw_point (pixbuf, x, y1, color, opacity);
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}
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/* Left / Right */
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for (y = y0; y <= y1; y++) {
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eel_debug_pixbuf_draw_point (pixbuf, x0, y, color, opacity);
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eel_debug_pixbuf_draw_point (pixbuf, x1, y, color, opacity);
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}
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}
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}
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void
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eel_debug_pixbuf_draw_rectangle_inset (GdkPixbuf *pixbuf,
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gboolean filled,
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int x0,
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int y0,
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|
int x1,
|
|
int y1,
|
|
guint32 color,
|
|
int opacity,
|
|
int inset)
|
|
{
|
|
EelDimensions dimensions;
|
|
|
|
g_return_if_fail (eel_gdk_pixbuf_is_valid (pixbuf));
|
|
g_return_if_fail (opacity >= EEL_OPACITY_FULLY_TRANSPARENT);
|
|
g_return_if_fail (opacity <= EEL_OPACITY_FULLY_OPAQUE);
|
|
|
|
dimensions = eel_gdk_pixbuf_get_dimensions (pixbuf);
|
|
|
|
if (x0 == -1) {
|
|
x0 = 0;
|
|
}
|
|
|
|
if (y0 == -1) {
|
|
y0 = 0;
|
|
}
|
|
|
|
if (x1 == -1) {
|
|
x1 = dimensions.width - 1;
|
|
}
|
|
|
|
if (y1 == -1) {
|
|
y1 = dimensions.height - 1;
|
|
}
|
|
|
|
x0 += inset;
|
|
y0 += inset;
|
|
x1 -= inset;
|
|
y1 -= inset;
|
|
|
|
g_return_if_fail (x1 > x0);
|
|
g_return_if_fail (y1 > y0);
|
|
|
|
eel_debug_pixbuf_draw_rectangle (pixbuf, filled, x0, y0, x1, y1, color, opacity);
|
|
}
|