Added desktop notifications implementation for Windows 7 (and earlier)

brightray/browser/win/win32_desktop_notifications/toast.h

@@ -0,0 +1,99 @@
+#pragma once
+#include "desktop_notification_controller.h"
+
+namespace brightray {
+
+class DesktopNotificationController::Toast
+{
+public:
+    static void Register(HINSTANCE hInstance);
+    static HWND Create(HINSTANCE hInstance, std::shared_ptr<NotificationData>& data);
+    static Toast* Get(HWND hWnd)
+    {
+        return reinterpret_cast<Toast*>(GetWindowLongPtr(hWnd, 0));
+    }
+
+    static LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam);
+
+    const std::shared_ptr<NotificationData>& GetNotification() const
+    {
+        return data;
+    }
+
+    void ResetContents();
+
+    void Dismiss();
+
+    void PopUp(int y);
+    void SetVerticalPosition(int y);
+    int GetVerticalPosition() const
+    {
+        return verticalPosTarget;
+    }
+    int GetHeight() const
+    {
+        return toastSize.cy;
+    }
+    HDWP Animate(HDWP hdwp, const POINT& origin);
+    bool IsAnimationActive() const
+    {
+        return easeInActive || easeOutActive || IsStackCollapseActive();
+    }
+    bool IsHighlighted() const
+    {
+        _ASSERT(!(isHighlighted && !IsWindowVisible(hWnd)));
+        return isHighlighted;
+    }
+
+private:
+    enum TimerID {
+        TimerID_AutoDismiss = 1
+    };
+
+    Toast(HWND hWnd, std::shared_ptr<NotificationData>* data);
+    ~Toast();
+
+    void UpdateBufferSize();
+    void UpdateScaledImage(const SIZE& size);
+    void Draw();
+    void Invalidate();
+    bool IsRedrawNeeded() const;
+    void UpdateContents();
+
+    void AutoDismiss();
+    void CancelDismiss();
+    void ScheduleDismissal();
+
+    void StartEaseIn();
+    void StartEaseOut();
+    bool IsStackCollapseActive() const;
+
+    float AnimateEaseIn();
+    float AnimateEaseOut();
+    float AnimateStackCollapse();
+
+private:
+    static constexpr const TCHAR className[] = TEXT("DesktopNotificationToast");
+
+    const HWND hWnd;
+    HDC hdc;
+    HBITMAP bitmap = NULL;
+
+    const std::shared_ptr<NotificationData> data; // never null
+
+    SIZE toastSize = {};
+    SIZE margin = {};
+    RECT closeButtonRect = {};
+    HBITMAP scaledImage = NULL;
+
+    int verticalPos = 0;
+    int verticalPosTarget = 0;
+    bool isNonInteractive = false;
+    bool easeInActive = false;
+    bool easeOutActive = false;
+    bool isContentUpdated = false, isHighlighted = false, isCloseHot = false;
+    DWORD easeInStart, easeOutStart, stackCollapseStart;
+    float easeInPos = 0, easeOutPos = 0, stackCollapsePos = 0;
+};
+
+}