From 33877c8f9403d33b514fc67bce3602b0e515b242 Mon Sep 17 00:00:00 2001
From: Jeffy Chen <jeffy.chen@rock-chips.com>
Date: Thu, 2 Jun 2022 19:00:40 +0800
Subject: [PATCH 68/74] desktop-shell: Support setting panel scale in
 weston.ini

Tested with:
[shell]
panel-scale=2

Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
---
 clients/desktop-shell.c | 41 ++++++++++++++++++++++++++---------------
 1 file changed, 26 insertions(+), 15 deletions(-)

diff --git a/clients/desktop-shell.c b/clients/desktop-shell.c
index 6cf21da..a81eb0a 100644
--- a/clients/desktop-shell.c
+++ b/clients/desktop-shell.c
@@ -109,6 +109,7 @@ struct panel {
 	enum weston_desktop_shell_panel_position panel_position;
 	enum clock_format clock_format;
 	uint32_t color;
+	double scale;
 };
 
 struct background {
@@ -242,17 +243,18 @@ panel_launcher_redraw_handler(struct widget *widget, void *data)
 {
 	struct panel_launcher *launcher = data;
 	struct rectangle allocation;
+	double scale = launcher->panel->scale;
 	cairo_t *cr;
 
 	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;
+		cairo_image_surface_get_width(launcher->icon) * scale / 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;
+		cairo_image_surface_get_height(launcher->icon) * scale / 2;
 	if (allocation.height > allocation.width)
 		allocation.y += allocation.height / 2 - allocation.width / 2;
 	if (launcher->pressed) {
@@ -260,14 +262,15 @@ panel_launcher_redraw_handler(struct widget *widget, void *data)
 		allocation.y++;
 	}
 
+	cairo_scale(cr, scale, scale);
 	cairo_set_source_surface(cr, launcher->icon,
-				 allocation.x, allocation.y);
+				 allocation.x / scale, allocation.y / scale);
 	cairo_paint(cr);
 
 	if (launcher->focused) {
 		cairo_set_source_rgba(cr, 1.0, 1.0, 1.0, 0.4);
 		cairo_mask_surface(cr, launcher->icon,
-				   allocation.x, allocation.y);
+				   allocation.x / scale, allocation.y / scale);
 	}
 
 	cairo_destroy(cr);
@@ -394,6 +397,8 @@ panel_clock_redraw_handler(struct widget *widget, void *data)
 	time_t rawtime;
 	struct tm * timeinfo;
 	char string[128];
+	double scale = clock->panel->scale;
+	int spacing = DEFAULT_SPACING * scale;
 
 	time(&rawtime);
 	timeinfo = localtime(&rawtime);
@@ -404,11 +409,11 @@ panel_clock_redraw_handler(struct widget *widget, void *data)
 		return;
 
 	cr = widget_cairo_create(clock->panel->widget);
-	cairo_set_font_size(cr, 14);
+	cairo_set_font_size(cr, 14 * scale);
 	cairo_text_extents(cr, string, &extents);
 	if (allocation.x > 0)
 		allocation.x +=
-			allocation.width - DEFAULT_SPACING * 1.5 - extents.width;
+			allocation.width - spacing * 1.5 - extents.width;
 	else
 		allocation.x +=
 			allocation.width / 2 - extents.width / 2;
@@ -499,8 +504,10 @@ panel_resize_handler(struct widget *widget,
 	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;
+	double scale = panel->scale;
+	int spacing = DEFAULT_SPACING * scale;
+	int first_pad_h = horizontal ? 0 : spacing / 2;
+	int first_pad_w = horizontal ? spacing / 2 : 0;
 
 	wl_list_for_each(launcher, &panel->launcher_list, link) {
 		widget_set_allocation(launcher->widget, x, y,
@@ -513,14 +520,14 @@ panel_resize_handler(struct widget *widget,
 	}
 
 	if (panel->clock_format == CLOCK_FORMAT_SECONDS)
-		w = 170;
+		w = 170 * scale;
 	else /* CLOCK_FORMAT_MINUTES and 24H versions */
-		w = 150;
+		w = 150 * scale;
 
 	if (horizontal)
 		x = width - w;
 	else
-		y = height - (h = DEFAULT_SPACING * 3);
+		y = height - (h = spacing * 3);
 
 	if (panel->clock)
 		widget_set_allocation(panel->clock->widget,
@@ -552,21 +559,21 @@ panel_configure(void *data,
 	switch (desktop->panel_position) {
 	case WESTON_DESKTOP_SHELL_PANEL_POSITION_TOP:
 	case WESTON_DESKTOP_SHELL_PANEL_POSITION_BOTTOM:
-		height = 32;
+		height = 32 * panel->scale;
 		break;
 	case WESTON_DESKTOP_SHELL_PANEL_POSITION_LEFT:
 	case WESTON_DESKTOP_SHELL_PANEL_POSITION_RIGHT:
 		switch (desktop->clock_format) {
 		case CLOCK_FORMAT_NONE:
-			width = 32;
+			width = 32 * panel->scale;
 			break;
 		case CLOCK_FORMAT_MINUTES:
 		case CLOCK_FORMAT_MINUTES_24H:
 		case CLOCK_FORMAT_SECONDS_24H:
-			width = 150;
+			width = 150 * panel->scale;
 			break;
 		case CLOCK_FORMAT_SECONDS:
-			width = 170;
+			width = 170 * panel->scale;
 			break;
 		}
 		break;
@@ -636,6 +643,10 @@ panel_create(struct desktop *desktop, struct output *output)
 	s = weston_config_get_section(desktop->config, "shell", NULL, NULL);
 	weston_config_section_get_color(s, "panel-color",
 					&panel->color, 0xaa000000);
+	weston_config_section_get_double(s, "panel-scale",
+					 &panel->scale, 1.0f);
+	if (!panel->scale)
+		panel->scale = 1.0f;
 
 	panel_add_launchers(panel, desktop);
 
-- 
2.20.1