desktop-shell: Click top left and align clock

Pads launchers with the empty space that used to be around them. Moving
pointer to 0,0 and clicking launches the preferred app. First launcher
has more padding at its start to look nice.

Moves the clock to the right edge with same padding. Keeps one of the
two values for text extents that the code was already retrieving but
never read. Horizontal panel position centers the clock.

Sets text in the panel, meaning tooltips and the clock, to consistent 14
units of the default system font at 85% of the max brightness, so it's
less tiring on eyes.

clients/desktop-shell.c

@@ -52,6 +52,7 @@
 #include "weston-desktop-shell-client-protocol.h"
 
 #define DEFAULT_CLOCK_FORMAT CLOCK_FORMAT_MINUTES
+#define DEFAULT_SPACING 10
 
 extern char **environ; /* defined by libc */
 
@@ -241,6 +242,14 @@ panel_launcher_redraw_handler(struct widget *widget, void *data)
 	cr = widget_cairo_create(launcher->panel->widget);
 
 	widget_get_allocation(widget, &allocation);
+	allocation.x += allocation.width / 2 -
+		cairo_image_surface_get_width(launcher->icon) / 2;
+	if (allocation.width > allocation.height)
+		allocation.x += allocation.width / 2 - allocation.height / 2;
+	allocation.y += allocation.height / 2 -
+		cairo_image_surface_get_height(launcher->icon) / 2;
+	if (allocation.height > allocation.width)
+		allocation.y += allocation.height / 2 - allocation.width / 2;
 	if (launcher->pressed) {
 		allocation.x++;
 		allocation.y++;
@@ -377,7 +386,6 @@ panel_clock_redraw_handler(struct widget *widget, void *data)
 	cairo_t *cr;
 	struct rectangle allocation;
 	cairo_text_extents_t extents;
-	cairo_font_extents_t font_extents;
 	time_t rawtime;
 	struct tm * timeinfo;
 	char string[128];
@@ -391,19 +399,20 @@ panel_clock_redraw_handler(struct widget *widget, void *data)
 		return;
 
 	cr = widget_cairo_create(clock->panel->widget);
-	cairo_select_font_face(cr, "sans",
-			       CAIRO_FONT_SLANT_NORMAL,
-			       CAIRO_FONT_WEIGHT_NORMAL);
 	cairo_set_font_size(cr, 14);
 	cairo_text_extents(cr, string, &extents);
-	cairo_font_extents (cr, &font_extents);
-	cairo_move_to(cr, allocation.x + 5,
-		      allocation.y + 3 * (allocation.height >> 2) + 1);
-	cairo_set_source_rgb(cr, 0, 0, 0);
+	if (allocation.x > 0)
+		allocation.x +=
+			allocation.width - DEFAULT_SPACING * 1.5 - extents.width;
+	else
+		allocation.x +=
+			allocation.width / 2 - extents.width / 2;
+	allocation.y += allocation.height / 2 - 1 + extents.height / 2;
+	cairo_move_to(cr, allocation.x + 1, allocation.y + 1);
+	cairo_set_source_rgba(cr, 0, 0, 0, 0.85);
 	cairo_show_text(cr, string);
-	cairo_move_to(cr, allocation.x + 4,
-		      allocation.y + 3 * (allocation.height >> 2));
-	cairo_set_source_rgb(cr, 1, 1, 1);
+	cairo_move_to(cr, allocation.x, allocation.y);
+	cairo_set_source_rgba(cr, 1, 1, 1, 0.85);
 	cairo_show_text(cr, string);
 	cairo_destroy(cr);
 }
@@ -466,44 +475,33 @@ panel_resize_handler(struct widget *widget,
 {
 	struct panel_launcher *launcher;
 	struct panel *panel = data;
-	int bx = width / 2;
-	int by = height / 2;
-	int spacing = 10;
-	int x = spacing;
-	int y = spacing;
-	int w, h;
+	int x = 0;
+	int y = 0;
+	int w = height > width ? width : height;
+	int h = w;
 	int horizontal = panel->panel_position == WESTON_DESKTOP_SHELL_PANEL_POSITION_TOP || panel->panel_position == WESTON_DESKTOP_SHELL_PANEL_POSITION_BOTTOM;
+	int first_pad_h = horizontal ? 0 : DEFAULT_SPACING / 2;
+	int first_pad_w = horizontal ? DEFAULT_SPACING / 2 : 0;
 
 	wl_list_for_each(launcher, &panel->launcher_list, link) {
-		w = cairo_image_surface_get_width(launcher->icon);
-		h = cairo_image_surface_get_height(launcher->icon);
-
+		widget_set_allocation(launcher->widget, x, y,
+				      w + first_pad_w + 1, h + first_pad_h + 1);
 		if (horizontal)
-			y = by - h / 2;
+			x += w + first_pad_w;
 		else
-			x = bx - w / 2;
-		widget_set_allocation(launcher->widget,
-				      x, y, w + 1, h + 1);
-		if (horizontal)
-			x += w + spacing;
-		else
-			y += h + spacing;
+			y += h + first_pad_h;
+		first_pad_h = first_pad_w = 0;
 	}
 
-	h = 20;
-
 	if (panel->clock_format == CLOCK_FORMAT_SECONDS)
-		w = 190;
-	else /* CLOCK_FORMAT_MINUTES */
 		w = 170;
+	else /* CLOCK_FORMAT_MINUTES */
+		w = 150;
 
-	if (horizontal) {
-		x = width - w - spacing;
-		y = by - h / 2;
-	} else {
-		x = bx - w / 2;
-		y = height - h - spacing;
-	}
+	if (horizontal)
+		x = width - w;
+	else
+		y = height - (h = DEFAULT_SPACING * 3);
 
 	if (panel->clock)
 		widget_set_allocation(panel->clock->widget,
@@ -544,10 +542,10 @@ panel_configure(void *data,
 			width = 32;
 			break;
 		case CLOCK_FORMAT_MINUTES:
-			width = 170;
+			width = 150;
 			break;
 		case CLOCK_FORMAT_SECONDS:
-			width = 190;
+			width = 170;
 			break;
 		}
 		break;

clients/window.c

@@ -2053,8 +2053,9 @@ tooltip_redraw_handler(struct widget *widget, void *data)
 	cairo_set_source_rgba(cr, 0.0, 0.0, 0.4, 0.8);
 	cairo_fill(cr);
 
-	cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
-	cairo_move_to(cr, 10, 16);
+	cairo_set_source_rgba(cr, 1.0, 1.0, 1.0, 0.85);
+	cairo_move_to(cr, 10, 17);
+	cairo_set_font_size(cr, 14);
 	cairo_show_text(cr, tooltip->entry);
 	cairo_destroy(cr);
 }
@@ -2070,6 +2071,7 @@ get_text_extents(struct display *display, struct tooltip *tooltip)
 	 * outside repaint, either.
 	 */
 	cr = cairo_create(display->dummy_surface);
+	cairo_set_font_size(cr, 14);
 	cairo_text_extents(cr, tooltip->entry, &extents);
 	cairo_destroy(cr);