Repo created

libs/drape_frontend/gui/skin.hpp

@@ -0,0 +1,107 @@
+#pragma once
+
+#include "drape/drape_diagnostics.hpp"
+#include "drape/drape_global.hpp"
+
+#include "geometry/point2d.hpp"
+
+#include "coding/reader.hpp"
+
+#include <map>
+#include <string>
+#include <utility>
+
+namespace gui
+{
+enum EWidget
+{
+  WIDGET_RULER = 0x1,
+  WIDGET_COMPASS = 0x2,
+  WIDGET_COPYRIGHT = 0x4,
+  WIDGET_SCALE_FPS_LABEL = 0x8,
+  // The following widgets are controlled by the engine. Don't use them in platform code.
+  WIDGET_CHOOSE_POSITION_MARK = 0x8000,
+#ifdef RENDER_DEBUG_INFO_LABELS
+  WIDGET_DEBUG_INFO
+#endif
+};
+
+enum EGuiHandle
+{
+  GuiHandleScaleLabel,
+  GuiHandleCopyright,
+  GuiHandleCompass,
+  GuiHandleRuler,
+  GuiHandleRulerLabel,
+  GuiHandleChoosePositionMark,
+  GuiHandleWatermark,
+#ifdef RENDER_DEBUG_INFO_LABELS
+  GuiHandleDebugLabel = 100
+#endif
+};
+
+struct Position
+{
+  Position() : m_pixelPivot(m2::PointF::Zero()), m_anchor(dp::Center) {}
+
+  explicit Position(dp::Anchor anchor) : m_pixelPivot(m2::PointF::Zero()), m_anchor(anchor) {}
+
+  Position(m2::PointF const & pt, dp::Anchor anchor) : m_pixelPivot(pt), m_anchor(anchor) {}
+
+  m2::PointF m_pixelPivot;
+  dp::Anchor m_anchor;
+};
+
+// TWidgetsInitInfo - static information about gui widgets (geometry align).
+using TWidgetsInitInfo = std::map<EWidget, gui::Position>;
+// TWidgetsLayoutInfo - dynamic info. Pivot point of each widget in pixel coordinates.
+using TWidgetsLayoutInfo = std::map<EWidget, m2::PointD>;
+// TWidgetsSizeInfo - info about widget pixel sizes.
+using TWidgetsSizeInfo = TWidgetsLayoutInfo;
+
+class PositionResolver
+{
+public:
+  Position Resolve(int w, int h, double vs) const;
+  void AddAnchor(dp::Anchor anchor);
+  void AddRelative(dp::Anchor anchor);
+  void SetOffsetX(float x);
+  void SetOffsetY(float y);
+
+private:
+  dp::Anchor m_elementAnchor = dp::Center;
+  dp::Anchor m_resolveAnchor = dp::Center;
+  m2::PointF m_offset = m2::PointF::Zero();
+};
+
+class Skin
+{
+public:
+  Skin(ReaderPtr<Reader> const & reader, float visualScale);
+
+  // @param name - must be single flag, not combination.
+  Position ResolvePosition(EWidget name);
+  void Resize(int w, int h);
+  int GetWidth() const { return m_displayWidth; }
+  int GetHeight() const { return m_displayHeight; }
+
+  template <typename ToDo>
+  void ForEach(ToDo todo)
+  {
+    for (auto const & node : m_resolvers)
+      todo(node.first, ResolvePosition(node.first));
+  }
+
+private:
+  // TResolversPair.first - Portrait (when weight < height).
+  // TResolversPair.second - Landscape (when weight >= height).
+  using TResolversPair = std::pair<PositionResolver, PositionResolver>;
+  std::map<EWidget, TResolversPair> m_resolvers;
+
+  int m_displayWidth;
+  int m_displayHeight;
+  float m_visualScale;
+};
+
+ReaderPtr<Reader> ResolveGuiSkinFile(std::string const & deviceType);
+}  // namespace gui