1/**************************************************************************
2 *
3 * Copyright 2010 VMware, Inc.
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
18 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
19 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
20 * USE OR OTHER DEALINGS IN THE SOFTWARE.
21 *
22 * The above copyright notice and this permission notice (including the
23 * next paragraph) shall be included in all copies or substantial portions
24 * of the Software.
25 *
26 *
27 **************************************************************************/
28
29#include "gdi/gdi_sw_winsys.h"
30#include "pipe/p_screen.h"
31#include "state_tracker/graw.h"
32#include "target-helpers/inline_debug_helper.h"
33#include "target-helpers/inline_sw_helper.h"
34#include <windows.h>
35
36
37static LRESULT CALLBACK
38window_proc(HWND hWnd,
39            UINT uMsg,
40            WPARAM wParam,
41            LPARAM lParam)
42{
43   switch (uMsg) {
44   case WM_DESTROY:
45      PostQuitMessage(0);
46      break;
47
48   default:
49      return DefWindowProc(hWnd, uMsg, wParam, lParam);
50   }
51
52   return 0;
53}
54
55static struct {
56   void (* draw)(void);
57} graw;
58
59struct pipe_screen *
60graw_create_window_and_screen(int x,
61                              int y,
62                              unsigned width,
63                              unsigned height,
64                              enum pipe_format format,
65                              void **handle)
66{
67   struct sw_winsys *winsys = NULL;
68   struct pipe_screen *screen = NULL;
69   WNDCLASSEX wc;
70   UINT style = WS_VISIBLE | WS_TILEDWINDOW;
71   RECT rect;
72   HWND hWnd = NULL;
73   HDC hDC = NULL;
74
75   if (format != PIPE_FORMAT_R8G8B8A8_UNORM)
76      goto fail;
77
78   winsys = gdi_create_sw_winsys();
79   if (winsys == NULL)
80      goto fail;
81
82   screen = sw_screen_create(winsys);
83   if (screen == NULL)
84      goto fail;
85
86   memset(&wc, 0, sizeof wc);
87   wc.cbSize = sizeof wc;
88   wc.style = CS_OWNDC | CS_HREDRAW | CS_VREDRAW;
89   wc.lpfnWndProc = window_proc;
90   wc.lpszClassName = "graw-gdi";
91   wc.hInstance = GetModuleHandle(NULL);
92   wc.hIcon = LoadIcon(NULL, IDI_APPLICATION);
93   wc.hCursor = LoadCursor(NULL, IDC_ARROW);
94   wc.hbrBackground = (HBRUSH)(COLOR_BTNFACE + 1);
95   RegisterClassEx(&wc);
96
97   SetRect(&rect, 0, 0, width, height);
98   AdjustWindowRectEx(&rect, style, FALSE, 0);
99
100   hWnd = CreateWindowEx(0,
101                         wc.lpszClassName,
102                         wc.lpszClassName,
103                         style,
104                         x,
105                         y,
106                         rect.right - rect.left,
107                         rect.bottom - rect.top,
108                         NULL,
109                         NULL,
110                         wc.hInstance,
111                         0);
112   if (hWnd == NULL)
113      goto fail;
114
115   hDC = GetDC(hWnd);
116   if (hDC == NULL)
117      goto fail;
118
119   *handle = (void *)hDC;
120
121   return debug_screen_wrap(screen);
122
123fail:
124   if (hWnd)
125      DestroyWindow(hWnd);
126
127   if (screen)
128      screen->destroy(screen);
129
130   return NULL;
131}
132
133void
134graw_set_display_func(void (* draw)(void))
135{
136   graw.draw = draw;
137}
138
139void
140graw_main_loop(void)
141{
142   for (;;) {
143      MSG msg;
144
145      while (PeekMessage(&msg, NULL, 0, 0, PM_REMOVE)) {
146         if (msg.message == WM_QUIT) {
147            return;
148         }
149         TranslateMessage(&msg);
150         DispatchMessage(&msg);
151      }
152
153      if (graw.draw) {
154         graw.draw();
155      }
156
157      Sleep(0);
158   }
159}
160