GSlider: Add support for vertical sliders.

You now have to pass an Orientation to the GSlider constructor. It's not
possible to change the orientation after construction.

Added some vertical GSliders to the WidgetGallery demo for testing. :^)

1 files changed, 16 insertions, 4 deletions

diff --git a/Demos/WidgetGallery/main.cpp b/Demos/WidgetGallery/main.cpp
index 5fb1cd91f1..93fe3273a5 100755
--- a/Demos/WidgetGallery/main.cpp
+++ b/Demos/WidgetGallery/main.cpp
@@ -19,7 +19,7 @@ int main(int argc, char** argv)
     GApplication app(argc, argv);
 
     auto* window = new GWindow;
-    window->set_rect(100, 100, 320, 480);
+    window->set_rect(100, 100, 320, 620);
     window->set_title("Widget Gallery");
 
     auto* main_widget = new GWidget;
@@ -66,11 +66,23 @@ int main(int argc, char** argv)
     auto* spinbox2 = new GSpinBox(main_widget);
     spinbox2->set_enabled(false);
 
-    auto* slider1 = new GSlider(main_widget);
+    auto* vertical_slider_container = new GWidget(main_widget);
+    vertical_slider_container->set_size_policy(SizePolicy::Fill, SizePolicy::Fixed);
+    vertical_slider_container->set_preferred_size({ 0, 100 });
+    vertical_slider_container->set_layout(make<GBoxLayout>(Orientation::Horizontal));
+    auto* vslider1 = new GSlider(Orientation::Vertical, vertical_slider_container);
+    (void)vslider1;
+    auto* vslider2 = new GSlider(Orientation::Vertical, vertical_slider_container);
+    vslider2->set_enabled(false);
+    auto* vslider3 = new GSlider(Orientation::Vertical, vertical_slider_container);
+    vslider3->set_max(5);
+    vslider3->set_knob_size_mode(GSlider::KnobSizeMode::Proportional);
+
+    auto* slider1 = new GSlider(Orientation::Horizontal, main_widget);
     (void)slider1;
-    auto* slider2 = new GSlider(main_widget);
+    auto* slider2 = new GSlider(Orientation::Horizontal, main_widget);
     slider2->set_enabled(false);
-    auto* slider3 = new GSlider(main_widget);
+    auto* slider3 = new GSlider(Orientation::Horizontal, main_widget);
     slider3->set_max(5);
     slider3->set_knob_size_mode(GSlider::KnobSizeMode::Proportional);