skia2/tools/viewer/sk_app/unix/Window_unix.h

/*
* Copyright 2016 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/

#ifndef Window_unix_DEFINED
#define Window_unix_DEFINED

#include <X11/Xlib.h>
#include <GL/glx.h>
#include "../Window.h"
#include "SkChecksum.h"
#include "SkTDynamicHash.h"

typedef Window XWindow;

namespace sk_app {

class Window_unix : public Window {
public:
    Window_unix() : Window()
                  , fDisplay(nullptr)
                  , fWindow(0)
                  , fGC(nullptr)
                  , fVisualInfo(nullptr)
                  , fMSAASampleCount(0) {}
    ~Window_unix() override { this->closeWindow(); }

    bool initWindow(Display* display, const DisplayParams* params);

    void setTitle(const char*) override;
    void show() override;

    bool attach(BackendType attachType, const DisplayParams& params) override;

    void onInval() override;

    bool handleEvent(const XEvent& event);

    static const XWindow& GetKey(const Window_unix& w) {
        return w.fWindow;
    }

    static uint32_t Hash(const XWindow& w) {
        return SkChecksum::Mix(w);
    }

    static SkTDynamicHash<Window_unix, XWindow> gWindowMap;

    void markPendingPaint() { fPendingPaint = true; }
    void finishPaint() { 
        if (fPendingPaint) {
            this->onPaint(); 
            fPendingPaint = false; 
        }
    }

    void markPendingResize(int width, int height) {
        if (width != fWidth || height != fHeight){
            fPendingResize = true;
            fPendingWidth = width;
            fPendingHeight = height;
        }
    }
    void finishResize() { 
        if (fPendingResize) {
            this->onResize(fPendingWidth, fPendingHeight); 
            fPendingResize = false;
        } 
    }

private:
    void closeWindow();

    Display*     fDisplay;
    XWindow      fWindow;
    GC           fGC;
    XVisualInfo* fVisualInfo;
    int          fMSAASampleCount;

    Atom     fWmDeleteMessage;

    bool     fPendingPaint;
    int      fPendingWidth;
    int      fPendingHeight;
    bool     fPendingResize;
};

}   // namespace sk_app

#endif