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      1 /*
      2 * Copyright 2016 Google Inc.
      3 *
      4 * Use of this source code is governed by a BSD-style license that can be
      5 * found in the LICENSE file.
      6 */
      7 
      8 #include <windows.h>
      9 #include <tchar.h>
     10 
     11 #include "SkTypes.h"
     12 #include "Timer.h"
     13 #include "Window_win.h"
     14 #include "../Application.h"
     15 
     16 using sk_app::Application;
     17 
     18 static char* tchar_to_utf8(const TCHAR* str) {
     19 #ifdef _UNICODE
     20     int size = WideCharToMultiByte(CP_UTF8, 0, str, wcslen(str), NULL, 0, NULL, NULL);
     21     char* str8 = (char*)sk_malloc_throw(size + 1);
     22     WideCharToMultiByte(CP_UTF8, 0, str, wcslen(str), str8, size, NULL, NULL);
     23     str8[size] = '\0';
     24     return str8;
     25 #else
     26     return _strdup(str);
     27 #endif
     28 }
     29 
     30 // This file can work with GUI or CONSOLE subsystem types since we define _tWinMain and main().
     31 
     32 static int main_common(HINSTANCE hInstance, int show, int argc, char**argv);
     33 
     34 int APIENTRY _tWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPTSTR lpCmdLine,
     35                        int nCmdShow) {
     36 
     37     // convert from lpCmdLine to argc, argv.
     38     char* argv[4096];
     39     int argc = 0;
     40     TCHAR exename[1024], *next;
     41     int exenameLen = GetModuleFileName(NULL, exename, SK_ARRAY_COUNT(exename));
     42     // we're ignoring the possibility that the exe name exceeds the exename buffer
     43     (void)exenameLen;
     44     argv[argc++] = tchar_to_utf8(exename);
     45     TCHAR* arg = _tcstok_s(lpCmdLine, _T(" "), &next);
     46     while (arg != NULL) {
     47         argv[argc++] = tchar_to_utf8(arg);
     48         arg = _tcstok_s(NULL, _T(" "), &next);
     49     }
     50     int result = main_common(hInstance, nCmdShow, argc, argv);
     51     for (int i = 0; i < argc; ++i) {
     52         sk_free(argv[i]);
     53     }
     54     return result;
     55 }
     56 
     57 int main(int argc, char**argv) {
     58     return main_common(GetModuleHandle(NULL), SW_SHOW, argc, argv);
     59 }
     60 
     61 static int main_common(HINSTANCE hInstance, int show, int argc, char**argv) {
     62 
     63     Application* app = Application::Create(argc, argv, (void*)hInstance);
     64 
     65     MSG msg;
     66     memset(&msg, 0, sizeof(msg));
     67 
     68     bool idled = false;
     69 
     70     // Main message loop
     71     while (WM_QUIT != msg.message) {
     72         if (PeekMessage(&msg, nullptr, 0, 0, PM_REMOVE)) {
     73             TranslateMessage(&msg);
     74 
     75             if (WM_PAINT == msg.message) {
     76                 // Ensure that call onIdle at least once per WM_PAINT, or mouse events can
     77                 // overwhelm the message processing loop, and prevent animation from running.
     78                 if (!idled) {
     79                     app->onIdle();
     80                 }
     81                 idled = false;
     82             }
     83             DispatchMessage(&msg);
     84         } else {
     85             app->onIdle();
     86             idled = true;
     87         }
     88     }
     89 
     90     delete app;
     91 
     92     return (int)msg.wParam;
     93 }
     94