hypr-chrome v0.1

src/ChromeDecoration.hpp

@@ -0,0 +1,85 @@
+#pragma once
+
+#define WLR_USE_UNSTABLE
+
+#include "Globals.hpp"
+#include <hyprland/src/desktop/DesktopTypes.hpp>
+#include <hyprland/src/render/decorations/IHyprWindowDecoration.hpp>
+#include <hyprutils/math/Box.hpp>
+#include <hyprutils/math/Vector2D.hpp>
+#include <string>
+
+namespace Render {
+class ITexture;
+}
+
+// A decoration that draws a chamfered HUD-style border frame behind each
+// window, expanding past the window's edges by `plugin:hyprchrome:extent`
+// pixels on every side. The frame's corners are chamfered by an amount
+// inferred from the window's own border rounding, so the border peeking out
+// around a rounded window's corners reads as a matching diagonal cut rather
+// than a hard rectangular corner.
+class ChromeDecoration : public IHyprWindowDecoration {
+public:
+  ChromeDecoration(PHLWINDOW window);
+  virtual ~ChromeDecoration();
+
+  virtual SDecorationPositioningInfo getPositioningInfo();
+  virtual void onPositioningReply(const SDecorationPositioningReply& reply);
+  virtual void draw(PHLMONITOR monitor, float const& alpha);
+  virtual eDecorationType getDecorationType();
+  virtual void updateWindow(PHLWINDOW window);
+  virtual void damageEntire();
+  virtual eDecorationLayer getDecorationLayer();
+  virtual uint64_t getDecorationFlags();
+  virtual std::string getDisplayName();
+
+  PHLWINDOW GetOwner();
+
+  // Returns a cairo-rendered texture of the chamfered border frame sized to
+  // `sizePx` (device pixels): a hollow ring `extentPx` thick inset from the
+  // outer edge, with both the outer and inner boundaries corner-chamfered
+  // by `chamferPx`, plus a title bar of height `titleBarHeightPx` and width
+  // `titleBarWidthPx` (already measured/clamped by the caller - see
+  // ChromeDecorationGeometry) hanging off the floating top-border
+  // cutout. Cached and only regenerated when any of these change from the
+  // last call.
+  SP<Render::ITexture> GetBorderTexture(const Vector2D& sizePx, float extentPx, float chamferPx, uint64_t colorValue, float titleBarHeightPx, float titleBarWidthPx);
+
+  // Returns a texture of `title` rendered via Hyprland's own text renderer
+  // (Pango, through IHyprRenderer::renderText) at `textSizePx` using
+  // `fontFamily`, truncated with a trailing "…" if it doesn't fit within
+  // `maxWidthPx` - black while `isActive`, 0xEEEEEEFF otherwise, both at the
+  // border color's own alpha. Cached and only regenerated when any of these
+  // change from the last call. Returns nullptr if `title` is empty.
+  SP<Render::ITexture> GetTitleTexture(const std::string& title, float textSizePx, uint64_t colorValue, const std::string& fontFamily, int maxWidthPx, bool isActive);
+
+  WP<ChromeDecoration> self;
+
+private:
+  PHLWINDOWREF windowRef;
+  CBox assignedBox;
+
+  SP<Render::ITexture> cachedTexture;
+  Vector2D cachedTexSize = {-1, -1};
+  float cachedExtent = -1.F;
+  float cachedChamfer = -1.F;
+  uint64_t cachedColorValue = 0;
+  float cachedTitleBarHeight = -1.F;
+  float cachedTitleBarWidth = -1.F;
+
+  SP<Render::ITexture> cachedTitleTex;
+  std::string cachedTitleTexTitle;
+  float cachedTitleTexSize = -1.F;
+  uint64_t cachedTitleTexColor = 0;
+  std::string cachedTitleTexFont;
+  int cachedTitleTexMaxWidth = -1;
+  bool cachedTitleTexActive = false;
+
+  // The border frame's box in global (monitor-independent) logical
+  // coordinates: the window's own box, expanded by `extent` and offset by
+  // the window's workspace/floating animation offsets.
+  CBox FullDecorationExtentGlobal();
+
+  friend class ChromePassElement;
+};