tdf#157518: vcl: Introduce vcl control LevelBar

Introduces LevelBar that shares implementation with
Progress(Bar).

LevelBar is to be as a level indicator, e.g. password strength
level. Currently with native backends for gtk and Windows.

Currently, except on gtk - the colors of the bar at different
levels are hardcoded and not dependent on any kind of themeing.

On Windows it follows the styling of progress bar of type "Meter"
according to the uxguide:
https://learn.microsoft.com/en-us/windows/win32/uxguide/progress-bars#meters

Change-Id: Id772cda23615e9582463bf589e4674fd4588c864
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/157826
Tested-by: Jenkins
Reviewed-by: Sarper Akdemir <sarper.akdemir.extern@allotropia.de>

4 files changed, 20 insertions, 2 deletions

diff --git a/include/vcl/salnativewidgets.hxx b/include/vcl/salnativewidgets.hxx
index 907c3b618f88..aa856a16c35d 100644
--- a/include/vcl/salnativewidgets.hxx
+++ b/include/vcl/salnativewidgets.hxx
@@ -92,6 +92,7 @@ enum class ControlType {
 // application but not for the splash
 // screen (used in desktop/)
     IntroProgress      = 132,
+    LevelBar           = 133,
 // tool tips
     Tooltip            = 140,
 // to draw the implemented theme
diff --git a/include/vcl/status.hxx b/include/vcl/status.hxx
index 4e59481671fd..0c287ddbc1b1 100644
--- a/include/vcl/status.hxx
+++ b/include/vcl/status.hxx
@@ -36,7 +36,7 @@ struct ImplStatusItem;
 void DrawProgress(vcl::Window* pWindow, vcl::RenderContext& rRenderContext, const Point& rPos,
                                 tools::Long nOffset, tools::Long nPrgsWidth, tools::Long nPrgsHeight,
                                 sal_uInt16 nPercent1, sal_uInt16 nPercent2, sal_uInt16 nPercentCount,
-                                const tools::Rectangle& rFramePosSize);
+                                const tools::Rectangle& rFramePosSize, ControlType eControlType);
 
 
 enum class StatusBarItemBits {
diff --git a/include/vcl/toolkit/prgsbar.hxx b/include/vcl/toolkit/prgsbar.hxx
index dd9423178dda..1fcba74fdaba 100644
--- a/include/vcl/toolkit/prgsbar.hxx
+++ b/include/vcl/toolkit/prgsbar.hxx
@@ -52,6 +52,13 @@
 
 class UNLESS_MERGELIBS(VCL_DLLPUBLIC) ProgressBar final : public vcl::Window
 {
+public:
+    enum class BarStyle
+    {
+        Progress,
+        Level,
+    };
+
 private:
     Point               maPos;
     tools::Long                mnPrgsWidth;
@@ -59,6 +66,7 @@ private:
     sal_uInt16          mnPercent;
     sal_uInt16          mnPercentCount;
     bool                mbCalcNew;
+    BarStyle            meBarStyle;
 
     using Window::ImplInit;
     SAL_DLLPRIVATE void             ImplInit();
@@ -66,7 +74,7 @@ private:
     SAL_DLLPRIVATE void ImplDrawProgress(vcl::RenderContext& rRenderContext, sal_uInt16 nNewPerc);
 
 public:
-                        ProgressBar( vcl::Window* pParent, WinBits nWinBits );
+                        ProgressBar( vcl::Window* pParent, WinBits nWinBits, BarStyle eBarStyle );
 
     virtual void        Paint( vcl::RenderContext& rRenderContext, const tools::Rectangle& rRect ) override;
     virtual void        Resize() override;
diff --git a/include/vcl/weld.hxx b/include/vcl/weld.hxx
index e37bd36f65f4..2d8c4db085d6 100644
--- a/include/vcl/weld.hxx
+++ b/include/vcl/weld.hxx
@@ -1714,6 +1714,14 @@ public:
     virtual void set_text(const OUString& rText) = 0;
 };
 
+class VCL_DLLPUBLIC LevelBar : virtual public Widget
+{
+public:
+    /// Sets LevelBar fill percentage.
+    /// @param fPercentage bar's fill percentage, [0.0, 100.0]
+    virtual void set_percentage(double fPercentage) = 0;
+};
+
 class VCL_DLLPUBLIC Entry : virtual public Widget
 {
 private:
@@ -2622,6 +2630,7 @@ public:
     virtual std::unique_ptr<Entry> weld_entry(const OUString& id) = 0;
     virtual std::unique_ptr<Scale> weld_scale(const OUString& id) = 0;
     virtual std::unique_ptr<ProgressBar> weld_progress_bar(const OUString& id) = 0;
+    virtual std::unique_ptr<LevelBar> weld_level_bar(const OUString& id) = 0;
     virtual std::unique_ptr<Spinner> weld_spinner(const OUString& id) = 0;
     virtual std::unique_ptr<Image> weld_image(const OUString& id) = 0;
     virtual std::unique_ptr<Calendar> weld_calendar(const OUString& id) = 0;