Fixes #41935

2003-05-15  JP Rosevear  <jpr@ximian.com>

 	Fixes #41935

 	* gui/e-week-view.c (e_week_view_init): listen for scroll events
 	on the canvas
 	(e_week_view_on_button_press): don't scroll here
 	(e_week_view_on_scroll): scroll here

 	* gui/e-day-view.c (e_day_view_init): listen for scroll events on
 	the time and main canvases
 	(e_day_view_on_main_canvas_button_press): don't scroll here
 	(e_day_view_on_main_canvas_scroll): scroll here
 	(e_day_view_on_time_canvas_scroll): and here

svn path=/trunk/; revision=21210

2 files changed, 70 insertions, 48 deletions

diff --git a/calendar/gui/e-day-view.c b/calendar/gui/e-day-view.c
index 6764085741..f6aba9eede 100644
--- a/calendar/gui/e-day-view.c
+++ b/calendar/gui/e-day-view.c
@@ -188,10 +188,13 @@ static gboolean e_day_view_on_main_canvas_button_press (GtkWidget *widget,
 static gboolean e_day_view_on_main_canvas_button_release (GtkWidget *widget,
 							  GdkEventButton *event,
 							  EDayView *day_view);
+static gboolean e_day_view_on_main_canvas_scroll (GtkWidget *widget,
+						  GdkEventScroll *scroll,
+						  EDayView *day_view);
 
-static gboolean e_day_view_on_time_canvas_button_press (GtkWidget *widget,
-							GdkEventButton *event,
-							EDayView *day_view);
+static gboolean e_day_view_on_time_canvas_scroll (GtkWidget *widget,
+						  GdkEventScroll *scroll,
+						  EDayView *day_view);
 
 static void e_day_view_update_calendar_selection_time (EDayView *day_view);
 static gboolean e_day_view_on_main_canvas_motion (GtkWidget *widget,
@@ -448,10 +451,6 @@ static time_t e_day_view_find_work_week_start	(EDayView	*day_view,
 						 time_t		 start_time);
 static void e_day_view_recalc_work_week		(EDayView	*day_view);
 static void e_day_view_recalc_work_week_days_shown	(EDayView	*day_view);
-static gboolean e_day_view_set_event_font_cb	(EDayView	*day_view,
-						 gint		 day,
-						 gint		 event_num,
-						 gpointer	 data);
 
 static void selection_clear_event (GtkWidget *invisible,
 				   GdkEventSelection *event,
@@ -696,6 +695,10 @@ e_day_view_init (EDayView *day_view)
 				  G_CALLBACK (e_day_view_on_main_canvas_button_release),
 				  day_view);
 	g_signal_connect_after (day_view->main_canvas,
+				  "scroll_event",
+				  G_CALLBACK (e_day_view_on_main_canvas_scroll),
+				  day_view);
+	g_signal_connect_after (day_view->main_canvas,
 				  "motion_notify_event",
 				  G_CALLBACK (e_day_view_on_main_canvas_motion),
 				  day_view);
@@ -791,8 +794,8 @@ e_day_view_init (EDayView *day_view)
 			  0, 1, 1, 2,
 			  GTK_FILL, GTK_EXPAND | GTK_FILL, 0, 0);
 	gtk_widget_show (day_view->time_canvas);
-	g_signal_connect_after (day_view->time_canvas, "button_press_event",
-				G_CALLBACK (e_day_view_on_time_canvas_button_press), day_view);
+	g_signal_connect_after (day_view->time_canvas, "scroll_event",
+				G_CALLBACK (e_day_view_on_time_canvas_scroll), day_view);
 
 	canvas_group = GNOME_CANVAS_GROUP (GNOME_CANVAS (day_view->time_canvas)->root);
 
@@ -3129,18 +3132,6 @@ e_day_view_on_main_canvas_button_press (GtkWidget *widget,
 	g_print ("In e_day_view_on_main_canvas_button_press\n");
 #endif
 
-	/* Handle scroll wheel events */
-	if (event->button == 4) {
-		/* The wheel has been moved up, so scroll the canvas down. */
-		e_day_view_scroll (day_view, E_DAY_VIEW_WHEEL_MOUSE_STEP_SIZE);
-		return TRUE;
-	}
-	if (event->button == 5) {
-		/* The wheel has been moved down, so scroll the canvas up. */
-		e_day_view_scroll (day_view, -E_DAY_VIEW_WHEEL_MOUSE_STEP_SIZE);
-		return TRUE;
-	}
-
 	/* Convert the coords to the main canvas window, or return if the
 	   window is not found. */
 	if (!e_day_view_convert_event_coords (day_view, (GdkEvent*) event,
@@ -3204,24 +3195,39 @@ e_day_view_on_main_canvas_button_press (GtkWidget *widget,
 	return TRUE;
 }
 
-
 static gboolean
-e_day_view_on_time_canvas_button_press (GtkWidget      *widget,
-					GdkEventButton *event,
-					EDayView       *day_view)
+e_day_view_on_main_canvas_scroll (GtkWidget *widget,
+				  GdkEventScroll *scroll,
+				  EDayView *day_view)
 {
-	/* Handle scroll wheel events */
-	if (event->button == 4 || event->button == 5) {
-		GtkAdjustment *adj = GTK_LAYOUT (day_view->main_canvas)->vadjustment;
-		gfloat new_value;
+	switch (scroll->direction) {
+	case GDK_SCROLL_UP:
+		e_day_view_scroll (day_view, E_DAY_VIEW_WHEEL_MOUSE_STEP_SIZE);
+		return TRUE;
+	case GDK_SCROLL_DOWN:
+		e_day_view_scroll (day_view, -E_DAY_VIEW_WHEEL_MOUSE_STEP_SIZE);
+		return TRUE;
+	default:
+	}
 
-		new_value = adj->value + ((event->button == 4) ?
-					  -adj->page_increment / 2:
-					  adj->page_increment / 2);
-		new_value = CLAMP (new_value, adj->lower, adj->upper - adj->page_size);
-		gtk_adjustment_set_value (adj, new_value);
+	return FALSE;
+}
 
+
+static gboolean
+e_day_view_on_time_canvas_scroll (GtkWidget      *widget,
+				  GdkEventScroll *scroll,
+				  EDayView       *day_view)
+{
+	
+	switch (scroll->direction) {
+	case GDK_SCROLL_UP:
+		e_day_view_scroll (day_view, E_DAY_VIEW_WHEEL_MOUSE_STEP_SIZE);
+		return TRUE;
+	case GDK_SCROLL_DOWN:
+		e_day_view_scroll (day_view, -E_DAY_VIEW_WHEEL_MOUSE_STEP_SIZE);
 		return TRUE;
+	default:
 	}
 
 	return FALSE;
diff --git a/calendar/gui/e-week-view.c b/calendar/gui/e-week-view.c
index 2e83b2c6c7..5a7ea363c6 100644
--- a/calendar/gui/e-week-view.c
+++ b/calendar/gui/e-week-view.c
@@ -122,6 +122,9 @@ static gboolean e_week_view_on_button_press (GtkWidget *widget,
 static gboolean e_week_view_on_button_release (GtkWidget *widget,
 					       GdkEventButton *event,
 					       EWeekView *week_view);
+static gboolean e_week_view_on_scroll (GtkWidget *widget,
+				       GdkEventScroll *scroll,
+				       EWeekView *week_view);
 static gboolean e_week_view_on_motion (GtkWidget *widget,
 				       GdkEventMotion *event,
 				       EWeekView *week_view);
@@ -383,6 +386,8 @@ e_week_view_init (EWeekView *week_view)
 				G_CALLBACK (e_week_view_on_button_press), week_view);
 	g_signal_connect_after (week_view->main_canvas, "button_release_event",
 				G_CALLBACK (e_week_view_on_button_release), week_view);
+	g_signal_connect_after (week_view->main_canvas, "scroll_event",
+				G_CALLBACK (e_week_view_on_scroll), week_view);
 	g_signal_connect_after (week_view->main_canvas, "motion_notify_event",
 				G_CALLBACK (e_week_view_on_motion), week_view);
 
@@ -2213,20 +2218,6 @@ e_week_view_on_button_press (GtkWidget *widget,
 		g_print (" item is pressed\n");
 #endif
 
-	/* Handle scroll wheel events */
-	if (event->button == 4 || event->button == 5) {
-		GtkAdjustment *adj = GTK_RANGE (week_view->vscrollbar)->adjustment;
-		gfloat new_value;
-
-		new_value = adj->value + ((event->button == 4) ?
-					  -adj->page_increment:
-					  adj->page_increment);
-		new_value = CLAMP (new_value, adj->lower, adj->upper - adj->page_size);
-		gtk_adjustment_set_value (adj, new_value);
-
-		return TRUE;
-	}
-
 	/* Convert the mouse position to a week & day. */
 	x = event->x;
 	y = event->y;
@@ -2303,6 +2294,31 @@ e_week_view_on_button_release (GtkWidget *widget,
 	return FALSE;
 }
 
+static gboolean
+e_week_view_on_scroll (GtkWidget *widget,
+		       GdkEventScroll *scroll,
+		       EWeekView *week_view)
+{
+	GtkAdjustment *adj = GTK_RANGE (week_view->vscrollbar)->adjustment;
+	gfloat new_value;
+	
+	switch (scroll->direction){
+	case GDK_SCROLL_UP:
+		new_value = adj->value - adj->page_increment;
+		break;
+	case GDK_SCROLL_DOWN:
+		new_value = adj->value + adj->page_increment;
+		break;
+	default:
+		return FALSE;
+	}
+	
+	new_value = CLAMP (new_value, adj->lower, adj->upper - adj->page_size);
+	gtk_adjustment_set_value (adj, new_value);
+	
+	return TRUE;
+}
+
 
 static gboolean
 e_week_view_on_motion (GtkWidget *widget,