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apprt/gtk: comment about future API

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This commit is contained in:
Mitchell Hashimoto
2023-10-27 15:09:52 -07:00
parent b985b28918
commit 25e3b21eae
1 changed files with 4 additions and 0 deletions
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4
src/apprt/gtk/Surface.zig
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@ -350,6 +350,8 @@ pub fn shouldClose(self: *const Surface) bool {
} }
pub fn getContentScale(self: *const Surface) !apprt.ContentScale { pub fn getContentScale(self: *const Surface) !apprt.ContentScale {
// Future: detect GTK version 4.12+ and use gdk_surface_get_scale so we
// can support fractional scaling.
const scale = c.gtk_widget_get_scale_factor(@ptrCast(self.gl_area)); const scale = c.gtk_widget_get_scale_factor(@ptrCast(self.gl_area));
return .{ .x = @floatFromInt(scale), .y = @floatFromInt(scale) }; return .{ .x = @floatFromInt(scale), .y = @floatFromInt(scale) };
} }
@ -619,6 +621,8 @@ fn gtkResize(area: *c.GtkGLArea, width: c.gint, height: c.gint, ud: ?*anyopaque)
.height = @intCast(height), .height = @intCast(height),
}; };
// We also update the content scale because there is no signal for
// content scale change and it seems to trigger a resize event.
if (self.getContentScale()) |scale| { if (self.getContentScale()) |scale| {
self.core_surface.contentScaleCallback(scale) catch |err| { self.core_surface.contentScaleCallback(scale) catch |err| {
log.err("error in content scale callback err={}", .{err}); log.err("error in content scale callback err={}", .{err});