[evolution/rendering-cleanup: 11/78] calendar: Port meeting time selector to Cairo

[Benjamin Otte <otte src gnome org>]

commit e3681425a26b3d4c545afd9bd5473a9bfa100bee
Author: Benjamin Otte <otte redhat com>
Date:   Sat Oct 9 02:49:52 2010 +0200

    calendar: Port meeting time selector to Cairo

 calendar/gui/e-meeting-time-sel-item.c |   41 ++++++++++-------
 calendar/gui/e-meeting-time-sel.c      |   78 +++++++++++++++++++------------
 calendar/gui/e-meeting-time-sel.h      |    7 +--
 3 files changed, 74 insertions(+), 52 deletions(-)
---
diff --git a/calendar/gui/e-meeting-time-sel-item.c b/calendar/gui/e-meeting-time-sel-item.c
index 86afc39..ade6705 100644
--- a/calendar/gui/e-meeting-time-sel-item.c
+++ b/calendar/gui/e-meeting-time-sel-item.c
@@ -134,7 +134,6 @@ e_meeting_time_selector_item_init (EMeetingTimeSelectorItem *mts_item)
 	mts_item->mts = NULL;
 
 	mts_item->main_gc = NULL;
-	mts_item->stipple_gc = NULL;
 
 	/* Create the cursors. */
 	mts_item->normal_cursor = gdk_cursor_new (GDK_LEFT_PTR);
@@ -206,7 +205,6 @@ e_meeting_time_selector_item_realize (GnomeCanvasItem *item)
 	window = gtk_widget_get_window (GTK_WIDGET (canvas));
 
 	mts_item->main_gc = gdk_gc_new (window);
-	mts_item->stipple_gc = gdk_gc_new (window);
 }
 
 static void
@@ -218,8 +216,6 @@ e_meeting_time_selector_item_unrealize (GnomeCanvasItem *item)
 
 	g_object_unref (mts_item->main_gc);
 	mts_item->main_gc = NULL;
-	g_object_unref (mts_item->stipple_gc);
-	mts_item->stipple_gc = NULL;
 
 	if (GNOME_CANVAS_ITEM_CLASS (e_meeting_time_selector_item_parent_class)->unrealize)
 		(*GNOME_CANVAS_ITEM_CLASS (e_meeting_time_selector_item_parent_class)->unrealize)(item);
@@ -243,6 +239,25 @@ e_meeting_time_selector_item_update (GnomeCanvasItem *item, double *affine, ArtS
  */
 
 static void
+draw_strikeout_box (EMeetingTimeSelectorItem *mts_item, cairo_t *cr,
+                    int x, int y, int width, int height)
+{
+        GnomeCanvas *canvas = GNOME_CANVAS_ITEM (mts_item)->canvas;
+        EMeetingTimeSelector *mts = mts_item->mts;
+
+        cairo_save (cr);
+
+        cairo_rectangle (cr, x, y, width, height);
+        cairo_clip (cr);
+
+        cairo_translate (cr, -canvas->draw_xofs, -canvas->draw_yofs);
+        cairo_set_source (cr, mts->no_info_pattern);
+        cairo_paint (cr);
+
+        cairo_restore (cr);
+}
+
+static void
 e_meeting_time_selector_item_draw (GnomeCanvasItem *item, GdkDrawable *drawable, gint x, gint y, gint width, gint height)
 {
 	EMeetingTimeSelector *mts;
@@ -252,14 +267,13 @@ e_meeting_time_selector_item_draw (GnomeCanvasItem *item, GdkDrawable *drawable,
 	gint row, row_y, start_x, end_x;
 	GDate date, last_date, current_date;
 	gboolean is_display_top, show_meeting_time;
-	GdkGC *gc, *stipple_gc;
+	GdkGC *gc;
 	cairo_t *cr;
 
 	mts_item = E_MEETING_TIME_SELECTOR_ITEM (item);
 	mts = mts_item->mts;
 	g_return_if_fail (mts != NULL);
 	gc = mts_item->main_gc;
-	stipple_gc = mts_item->stipple_gc;
 	cr = gdk_cairo_create (drawable);
 
 	is_display_top = (GTK_WIDGET (item->canvas) == mts->display_top)
@@ -311,11 +325,6 @@ e_meeting_time_selector_item_draw (GnomeCanvasItem *item, GdkDrawable *drawable,
 	if (!is_display_top) {
 		gdk_cairo_set_source_color (cr, &mts->grid_color);
 		gdk_gc_set_foreground (gc, &mts->grid_color);
-		gdk_gc_set_foreground (stipple_gc, &mts->grid_color);
-		gdk_gc_set_background (stipple_gc, &mts->stipple_bg_color);
-		gdk_gc_set_stipple (stipple_gc, mts->stipple);
-		gnome_canvas_set_stipple_origin (item->canvas, stipple_gc);
-		gdk_gc_set_fill (stipple_gc, GDK_OPAQUE_STIPPLED);
 		row = y / mts->row_height;
 		row_y = row * mts->row_height - y;
 		while (row < e_meeting_store_count_actual_attendees (mts->model) && row_y < height) {
@@ -324,16 +333,16 @@ e_meeting_time_selector_item_draw (GnomeCanvasItem *item, GdkDrawable *drawable,
 			if (e_meeting_attendee_get_has_calendar_info (ia)) {
 				if (e_meeting_time_selector_item_calculate_busy_range (mts, row, x, width, &start_x, &end_x)) {
 					if (start_x >= width || end_x <= 0) {
-						gdk_draw_rectangle (drawable, stipple_gc, TRUE, 0, row_y, width, mts->row_height);
+				                draw_strikeout_box (mts_item, cr, 0, row_y, width, mts->row_height);
 					} else {
 						if (start_x >= 0) {
-							gdk_draw_rectangle (drawable, stipple_gc, TRUE, 0, row_y, start_x, mts->row_height);
+							draw_strikeout_box (mts_item, cr, 0, row_y, start_x, mts->row_height);
 							cairo_move_to (cr, start_x, row_y);
 							cairo_line_to (cr, start_x, row_y + mts->row_height);
 							cairo_stroke (cr);
 						}
 						if (end_x <= width) {
-							gdk_draw_rectangle (drawable, stipple_gc, TRUE, end_x, row_y, width - end_x, mts->row_height);
+							draw_strikeout_box (mts_item, cr, end_x, row_y, width - end_x, mts->row_height);
 							cairo_move_to (cr, end_x, row_y);
 							cairo_line_to (cr, end_x, row_y + mts->row_height);
 							cairo_stroke (cr);
@@ -341,9 +350,7 @@ e_meeting_time_selector_item_draw (GnomeCanvasItem *item, GdkDrawable *drawable,
 					}
 				}
 			} else {
-				gdk_draw_rectangle (drawable, stipple_gc, TRUE,
-						    0, row_y,
-						    width, mts->row_height);
+				draw_strikeout_box (mts_item, cr, 0, row_y, width, mts->row_height);
 			}
 			row++;
 			row_y += mts->row_height;
diff --git a/calendar/gui/e-meeting-time-sel.c b/calendar/gui/e-meeting-time-sel.c
index e0fb5ad..f779118 100644
--- a/calendar/gui/e-meeting-time-sel.c
+++ b/calendar/gui/e-meeting-time-sel.c
@@ -278,11 +278,6 @@ meeting_time_selector_dispose (GObject *object)
 
 	e_meeting_time_selector_remove_timeout (mts);
 
-	if (mts->stipple) {
-		g_object_unref (mts->stipple);
-		mts->stipple = NULL;
-	}
-
 	if (mts->model) {
 		g_signal_handlers_disconnect_matched (
 			mts->model, G_SIGNAL_MATCH_DATA,
@@ -407,9 +402,6 @@ e_meeting_time_selector_construct (EMeetingTimeSelector * mts, EMeetingStore *em
 	guint accel_key;
 	time_t meeting_start_time;
 	struct tm *meeting_start_tm;
-	guchar stipple_bits[] = {
-		0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80,
-	};
 	AtkObject *a11y_label, *a11y_date_edit;
 
 	/* The default meeting time is the nearest half-hour interval in the
@@ -833,7 +825,6 @@ e_meeting_time_selector_construct (EMeetingTimeSelector * mts, EMeetingStore *em
 	e_meeting_time_selector_alloc_named_color (mts, "black", &mts->grid_color);
 	e_meeting_time_selector_alloc_named_color (mts, "white", &mts->grid_shadow_color);
 	e_meeting_time_selector_alloc_named_color (mts, "gray50", &mts->grid_unused_color);
-	e_meeting_time_selector_alloc_named_color (mts, "white", &mts->stipple_bg_color);
 	e_meeting_time_selector_alloc_named_color (mts, "white", &mts->attendee_list_bg_color);
 
 	e_meeting_time_selector_alloc_named_color (mts, "snow4", &mts->meeting_time_bg_color);
@@ -842,10 +833,6 @@ e_meeting_time_selector_construct (EMeetingTimeSelector * mts, EMeetingStore *em
 	e_meeting_time_selector_alloc_named_color (mts, "blue", &mts->busy_colors[E_MEETING_FREE_BUSY_BUSY]);
 	e_meeting_time_selector_alloc_named_color (mts, "orange4", &mts->busy_colors[E_MEETING_FREE_BUSY_OUT_OF_OFFICE]);
 
-	/* Create the stipple, for attendees with no data. */
-	mts->stipple = gdk_bitmap_create_from_data (NULL, (gchar *)stipple_bits,
-						    8, 8);
-
 	/* Connect handlers to the adjustments  scroll the other items. */
 	layout = GTK_LAYOUT (mts->display_main);
 	adjustment = gtk_layout_get_hadjustment (layout);
@@ -907,35 +894,32 @@ e_meeting_time_selector_expose_key_color (GtkWidget *darea,
 	GtkAllocation allocation;
 	GdkWindow *window;
 	GtkStyle *style;
-	GdkGC *gc;
+        cairo_t *cr;
 
 	style = gtk_widget_get_style (darea);
 	window = gtk_widget_get_window (darea);
 	gtk_widget_get_allocation (darea, &allocation);
 
 	mts = g_object_get_data (G_OBJECT (darea), "data");
-	gc = mts->color_key_gc;
 
 	gtk_paint_shadow (
 		style, window, GTK_STATE_NORMAL,
 		GTK_SHADOW_IN, NULL, NULL, NULL, 0, 0,
 		allocation.width, allocation.height);
 
+        cr = gdk_cairo_create (event->window);
+
 	if (color) {
-		gdk_gc_set_foreground (gc, color);
-		gdk_draw_rectangle (
-			window, gc, TRUE, 1, 1,
-			allocation.width - 2, allocation.height - 2);
+		gdk_cairo_set_source_color (cr, color);
 	} else {
-		gdk_gc_set_foreground (gc, &mts->grid_color);
-		gdk_gc_set_background (gc, &mts->stipple_bg_color);
-		gdk_gc_set_stipple (gc, mts->stipple);
-		gdk_gc_set_fill (gc, GDK_OPAQUE_STIPPLED);
-		gdk_draw_rectangle (
-			window, gc, TRUE, 1, 1,
-			allocation.width - 2, allocation.height - 2);
-		gdk_gc_set_fill (gc, GDK_SOLID);
+                cairo_set_source (cr, mts->no_info_pattern);
 	}
+        cairo_rectangle (cr,
+                         1, 1,
+                         allocation.width - 2, allocation.height - 2);
+        cairo_fill (cr);
+
+        cairo_destroy (cr);
 
 	return TRUE;
 }
@@ -1054,6 +1038,40 @@ e_meeting_time_selector_set_week_start_day (EMeetingTimeSelector *mts,
 	g_object_notify (G_OBJECT (mts), "week-start-day");
 }
 
+static cairo_pattern_t *
+e_meeting_time_selector_create_no_info_pattern (EMeetingTimeSelector *mts)
+{
+        cairo_surface_t *surface;
+        cairo_pattern_t *pattern;
+        GdkColor color;
+        cairo_t *cr;
+
+        surface = gdk_window_create_similar_surface (gtk_widget_get_window (GTK_WIDGET (mts)),
+                                                     CAIRO_CONTENT_COLOR, 8, 8);
+        cr = cairo_create (surface);
+
+        gdk_color_parse ("white", &color);
+        gdk_cairo_set_source_color (cr, &color);
+        cairo_paint (cr);
+
+        gdk_cairo_set_source_color (cr, &mts->grid_color);
+        cairo_set_line_width (cr, 1.0);
+        cairo_move_to (cr, -1,  5);
+        cairo_line_to (cr,  9, -5);
+        cairo_move_to (cr, -1, 13);
+        cairo_line_to (cr,  9,  3);
+        cairo_stroke (cr);
+
+        cairo_destroy (cr);
+
+        pattern = cairo_pattern_create_for_surface (surface);
+        cairo_pattern_set_extend (pattern, CAIRO_EXTEND_REPEAT);
+
+        cairo_surface_destroy (surface);
+
+        return pattern;
+}
+
 static void
 e_meeting_time_selector_realize (GtkWidget *widget)
 {
@@ -1066,7 +1084,7 @@ e_meeting_time_selector_realize (GtkWidget *widget)
 	mts = E_MEETING_TIME_SELECTOR (widget);
 
 	window = gtk_widget_get_window (widget);
-	mts->color_key_gc = gdk_gc_new (window);
+        mts->no_info_pattern = e_meeting_time_selector_create_no_info_pattern (mts);
 }
 
 static void
@@ -1076,8 +1094,8 @@ e_meeting_time_selector_unrealize (GtkWidget *widget)
 
 	mts = E_MEETING_TIME_SELECTOR (widget);
 
-	g_object_unref (mts->color_key_gc);
-	mts->color_key_gc = NULL;
+        cairo_pattern_destroy (mts->no_info_pattern);
+        mts->no_info_pattern = NULL;
 
 	if (GTK_WIDGET_CLASS (e_meeting_time_selector_parent_class)->unrealize)
 		(*GTK_WIDGET_CLASS (e_meeting_time_selector_parent_class)->unrealize)(widget);
diff --git a/calendar/gui/e-meeting-time-sel.h b/calendar/gui/e-meeting-time-sel.h
index efd7671..5fd5086 100644
--- a/calendar/gui/e-meeting-time-sel.h
+++ b/calendar/gui/e-meeting-time-sel.h
@@ -181,11 +181,8 @@ struct _EMeetingTimeSelector {
 	GdkColor grid_unused_color;
 	GdkColor busy_colors[E_MEETING_FREE_BUSY_LAST];
 
-	/* The stipple used for attendees with no data. */
-	GdkPixmap *stipple;
-
-	/* GC for drawing the color key. */
-	GdkGC *color_key_gc;
+        /* The pattern used for attendees with no data. */
+        cairo_pattern_t *no_info_pattern;
 
 	/* Width of the hours strings (e.g. "1:00") in the current font. */
 	gint hour_widths[24];