More refactoring for Viewer

tools/viewer/win/Window_win.cpp

-/*
-* Copyright 2016 Google Inc.
-*
-* Use of this source code is governed by a BSD-style license that can be
-* found in the LICENSE file.
-*/
-
-#include "Window_win.h"
-
-#include <tchar.h>
-#include <windows.h>
-#include <windowsx.h>
-
-#include "SkUtils.h"
-#include "VulkanTestContext_win.h"
-
-namespace sk_app {
-
-Window* Window::CreateNativeWindow(void* platformData) {
-    HINSTANCE hInstance = (HINSTANCE)platformData;
-
-    Window_win* window = new Window_win();
-    if (!window->init(hInstance)) {
-        delete window;
-        return nullptr;
-    }
-
-    return window;
-}
-
-LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam);
-
-bool Window_win::init(HINSTANCE hInstance) {
-    fHInstance = hInstance ? hInstance : GetModuleHandle(nullptr);
-
-    WNDCLASSEX wcex;
-    // The main window class name
-    static const TCHAR gSZWindowClass[] = _T("SkiaApp");
-
-    wcex.cbSize = sizeof(WNDCLASSEX);
-
-    wcex.style = CS_HREDRAW | CS_VREDRAW | CS_OWNDC;
-    wcex.lpfnWndProc = WndProc;
-    wcex.cbClsExtra = 0;
-    wcex.cbWndExtra = 0;
-    wcex.hInstance = fHInstance;
-    wcex.hIcon = LoadIcon(fHInstance, (LPCTSTR)IDI_WINLOGO);
-    wcex.hCursor = LoadCursor(nullptr, IDC_ARROW);;
-    wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
-    wcex.lpszMenuName = nullptr;
-    wcex.lpszClassName = gSZWindowClass;
-    wcex.hIconSm = LoadIcon(fHInstance, (LPCTSTR)IDI_WINLOGO);;
-
-    if (!RegisterClassEx(&wcex)) {
-        return false;
-    }
-
-   /*
-    if (fullscreen)
-    {
-        DEVMODE dmScreenSettings;
-        // If full screen set the screen to maximum size of the users desktop and 32bit.
-        memset(&dmScreenSettings, 0, sizeof(dmScreenSettings));
-        dmScreenSettings.dmSize = sizeof(dmScreenSettings);
-        dmScreenSettings.dmPelsWidth = (unsigned long)width;
-        dmScreenSettings.dmPelsHeight = (unsigned long)height;
-        dmScreenSettings.dmBitsPerPel = 32;
-        dmScreenSettings.dmFields = DM_BITSPERPEL | DM_PELSWIDTH | DM_PELSHEIGHT;
-
-        // Change the display settings to full screen.
-        ChangeDisplaySettings(&dmScreenSettings, CDS_FULLSCREEN);
-
-        // Set the position of the window to the top left corner.
-        posX = posY = 0;
-    } 
-    */
- //   gIsFullscreen = fullscreen;
-
-    fHWnd = CreateWindow(gSZWindowClass, nullptr, WS_OVERLAPPEDWINDOW,
-                         CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, nullptr, nullptr, fHInstance, nullptr);
-    if (!fHWnd)
-    {
-        return false;
-    }
-
-    SetWindowLongPtr(fHWnd, GWLP_USERDATA, (LONG_PTR)this);
-
-    return true;
-}
-
-static Window::Key get_key(WPARAM vk) {
-    static const struct {
-        WPARAM      fVK;
-        Window::Key fKey;
-    } gPair[] = {
-        { VK_BACK, Window::kBack_Key },
-        { VK_CLEAR, Window::kBack_Key },
-        { VK_RETURN, Window::kOK_Key },
-        { VK_UP, Window::kUp_Key },
-        { VK_DOWN, Window::kDown_Key },
-        { VK_LEFT, Window::kLeft_Key },
-        { VK_RIGHT, Window::kRight_Key }
-    };
-    for (size_t i = 0; i < SK_ARRAY_COUNT(gPair); i++) {
-        if (gPair[i].fVK == vk) {
-            return gPair[i].fKey;
-        }
-    }
-    return Window::kNONE_Key;
-}
-
-static uint32_t get_modifiers(UINT message, WPARAM wParam, LPARAM lParam) {
-    uint32_t modifiers = 0;
-
-    switch (message) {
-        case WM_UNICHAR:
-        case WM_CHAR:
-            if (0 == (lParam & (1 << 30))) {
-                modifiers |= Window::kFirstPress_ModifierKey;
-            }
-            if (lParam & (1 << 29)) {
-                modifiers |= Window::kOption_ModifierKey;
-            }
-            break;
-
-        case WM_KEYDOWN:
-        case WM_SYSKEYDOWN:
-            if (0 == (lParam & (1 << 30))) {
-                modifiers |= Window::kFirstPress_ModifierKey;
-            }
-            if (lParam & (1 << 29)) {
-                modifiers |= Window::kOption_ModifierKey;
-            }
-            break;
-
-        case WM_KEYUP:
-        case WM_SYSKEYUP:
-            if (lParam & (1 << 29)) {
-                modifiers |= Window::kOption_ModifierKey;
-            }
-            break;
-
-        case WM_LBUTTONDOWN:
-        case WM_LBUTTONUP:
-        case WM_MOUSEMOVE:
-            if (wParam & MK_CONTROL) {
-                modifiers |= Window::kControl_ModifierKey;
-            }
-            if (wParam & MK_SHIFT) {
-                modifiers |= Window::kShift_ModifierKey;
-            }
-    }
-
-    return modifiers;
-}
-
-LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
-{
-    PAINTSTRUCT ps;
-    HDC hdc;
-
-    Window_win* window = (Window_win*) GetWindowLongPtr(hWnd, GWLP_USERDATA);
-
-    bool eventHandled = false;
-
-    switch (message) {
-        case WM_PAINT:
-            hdc = BeginPaint(hWnd, &ps);
-            window->onPaint();
-            EndPaint(hWnd, &ps);
-            eventHandled = true;
-            break;
-
-        case WM_CLOSE:
-        case WM_DESTROY:
-            PostQuitMessage(0);
-            eventHandled = true;
-            break;
-
-        case WM_ACTIVATE:
-            // disable/enable rendering here, depending on wParam != WA_INACTIVE
-            break;
-
-        case WM_SIZE:
-            window->onResize(LOWORD(lParam), HIWORD(lParam));
-            eventHandled = true;
-            break;
-
-        case WM_UNICHAR:
-            eventHandled = window->onChar((SkUnichar)wParam, 
-                                          get_modifiers(message, wParam, lParam));
-            break;
-
-        case WM_CHAR: {
-            const uint16_t* c = reinterpret_cast<uint16_t*>(&wParam);
-            eventHandled = window->onChar(SkUTF16_NextUnichar(&c), 
-                                          get_modifiers(message, wParam, lParam));
-        } break;
-
-        case WM_KEYDOWN:
-        case WM_SYSKEYDOWN:
-            eventHandled = window->onKey(get_key(wParam), Window::kDown_InputState, 
-                                         get_modifiers(message, wParam, lParam));
-            break;
-
-        case WM_KEYUP:
-        case WM_SYSKEYUP:
-            eventHandled = window->onKey(get_key(wParam), Window::kUp_InputState,
-                                         get_modifiers(message, wParam, lParam));
-            break;
-
-        case WM_LBUTTONDOWN:
-        case WM_LBUTTONUP: {
-            int xPos = GET_X_LPARAM(lParam);
-            int yPos = GET_Y_LPARAM(lParam);
-
-            //if (!gIsFullscreen)
-            //{
-            //    RECT rc = { 0, 0, 640, 480 };
-            //    AdjustWindowRect(&rc, WS_OVERLAPPEDWINDOW, FALSE);
-            //    xPos -= rc.left;
-            //    yPos -= rc.top;
-            //}
-
-            Window::InputState istate = ((wParam & MK_LBUTTON) != 0) ? Window::kDown_InputState
-                                                                     : Window::kUp_InputState;
-
-            eventHandled = window->onMouse(xPos, yPos, istate, 
-                                            get_modifiers(message, wParam, lParam));
-        } break;
-
-        case WM_MOUSEMOVE: 
-            // only track if left button is down
-            if ((wParam & MK_LBUTTON) != 0) {
-                int xPos = GET_X_LPARAM(lParam);
-                int yPos = GET_Y_LPARAM(lParam);
-
-                //if (!gIsFullscreen)
-                //{
-                //    RECT rc = { 0, 0, 640, 480 };
-                //    AdjustWindowRect(&rc, WS_OVERLAPPEDWINDOW, FALSE);
-                //    xPos -= rc.left;
-                //    yPos -= rc.top;
-                //}
-
-                eventHandled = window->onMouse(xPos, yPos, Window::kMove_InputState,
-                                               get_modifiers(message, wParam, lParam));
-            }
-            break;
-
-        default:
-            return DefWindowProc(hWnd, message, wParam, lParam);
-    }
-
-    return eventHandled ? 0 : 1;
-}
-
-void Window_win::setTitle(const char* title) {
-    SetWindowTextA(fHWnd, title);
-}
-
-void Window_win::show() {
-    ShowWindow(fHWnd, SW_SHOW);
-}
-
-
-bool Window_win::attach(BackEndType attachType, int msaaSampleCount) {
-    if (kVulkan_BackendType != attachType) {
-        return false;
-    }
-
-    ContextPlatformData_win platformData;
-    platformData.fHInstance = fHInstance;
-    platformData.fHWnd = fHWnd;
-
-    fTestContext = VulkanTestContext::Create((void*)&platformData, msaaSampleCount);
-
-    return (SkToBool(fTestContext));
-}
-
-void Window_win::inval() {
-    InvalidateRect(fHWnd, nullptr, false);
-}
-
-}   // namespace sk_app