src/video/windows/SDL_windowsmouse.c
author Sam Lantinga <slouken@libsdl.org>
Mon, 31 Oct 2011 05:56:58 -0400
changeset 6044 35448a5ea044
parent 5535 96594ac5fd1a
child 6138 4c64952a58fb
permissions -rw-r--r--
Lots of fixes importing SDL source wholesale into a new iOS project
slouken@1895
     1
/*
slouken@5535
     2
  Simple DirectMedia Layer
slouken@5535
     3
  Copyright (C) 1997-2011 Sam Lantinga <slouken@libsdl.org>
slouken@1895
     4
slouken@5535
     5
  This software is provided 'as-is', without any express or implied
slouken@5535
     6
  warranty.  In no event will the authors be held liable for any damages
slouken@5535
     7
  arising from the use of this software.
slouken@1895
     8
slouken@5535
     9
  Permission is granted to anyone to use this software for any purpose,
slouken@5535
    10
  including commercial applications, and to alter it and redistribute it
slouken@5535
    11
  freely, subject to the following restrictions:
slouken@1895
    12
slouken@5535
    13
  1. The origin of this software must not be misrepresented; you must not
slouken@5535
    14
     claim that you wrote the original software. If you use this software
slouken@5535
    15
     in a product, an acknowledgment in the product documentation would be
slouken@5535
    16
     appreciated but is not required.
slouken@5535
    17
  2. Altered source versions must be plainly marked as such, and must not be
slouken@5535
    18
     misrepresented as being the original software.
slouken@5535
    19
  3. This notice may not be removed or altered from any source distribution.
slouken@1895
    20
*/
slouken@6044
    21
#include "SDL_config.h"
slouken@2710
    22
slouken@6044
    23
#if SDL_VIDEO_DRIVER_WINDOWS
slouken@1895
    24
slouken@5472
    25
#include "SDL_assert.h"
slouken@5062
    26
#include "SDL_windowsvideo.h"
slouken@1895
    27
slouken@5421
    28
#include "../../events/SDL_mouse_c.h"
slouken@5421
    29
slouken@5421
    30
slouken@5421
    31
HCURSOR SDL_cursor = NULL;
slouken@5421
    32
slouken@5421
    33
slouken@5421
    34
static SDL_Cursor *
slouken@5421
    35
WIN_CreateDefaultCursor()
slouken@5421
    36
{
slouken@5421
    37
    SDL_Cursor *cursor;
slouken@5421
    38
slouken@5421
    39
    cursor = SDL_calloc(1, sizeof(*cursor));
slouken@5421
    40
    if (cursor) {
slouken@5421
    41
        cursor->driverdata = LoadCursor(NULL, IDC_ARROW);
slouken@5421
    42
    } else {
slouken@5421
    43
        SDL_OutOfMemory();
slouken@5421
    44
    }
slouken@5421
    45
slouken@5421
    46
    return cursor;
slouken@5421
    47
}
slouken@5421
    48
slouken@5421
    49
static SDL_Cursor *
slouken@5421
    50
WIN_CreateCursor(SDL_Surface * surface, int hot_x, int hot_y)
slouken@5421
    51
{
slouken@5421
    52
    SDL_Cursor *cursor;
slouken@5421
    53
    HICON hicon;
slouken@5421
    54
    HDC hdc;
slouken@5421
    55
    BITMAPV4HEADER bmh;
slouken@5421
    56
    LPVOID pixels;
slouken@5421
    57
    ICONINFO ii;
slouken@5421
    58
slouken@5421
    59
    SDL_zero(bmh);
slouken@5421
    60
    bmh.bV4Size = sizeof(bmh);
slouken@5421
    61
    bmh.bV4Width = surface->w;
slouken@5421
    62
    bmh.bV4Height = -surface->h; /* Invert the image */
slouken@5421
    63
    bmh.bV4Planes = 1;
slouken@5421
    64
    bmh.bV4BitCount = 32;
slouken@5421
    65
    bmh.bV4V4Compression = BI_BITFIELDS;
slouken@5421
    66
    bmh.bV4AlphaMask = 0xFF000000;
slouken@5421
    67
    bmh.bV4RedMask   = 0x00FF0000;
slouken@5421
    68
    bmh.bV4GreenMask = 0x0000FF00;
slouken@5421
    69
    bmh.bV4BlueMask  = 0x000000FF;
slouken@5421
    70
slouken@5421
    71
    hdc = GetDC(NULL);
slouken@5421
    72
    SDL_zero(ii);
slouken@5421
    73
    ii.fIcon = FALSE;
slouken@5421
    74
    ii.xHotspot = (DWORD)hot_x;
slouken@5421
    75
    ii.yHotspot = (DWORD)hot_y;
slouken@5421
    76
    ii.hbmColor = CreateDIBSection(hdc, (BITMAPINFO*)&bmh, DIB_RGB_COLORS, &pixels, NULL, 0);
slouken@5421
    77
    ii.hbmMask = CreateBitmap(surface->w, surface->h, 1, 1, NULL);
slouken@5421
    78
    ReleaseDC(NULL, hdc);
slouken@5421
    79
slouken@5472
    80
    SDL_assert(surface->format->format == SDL_PIXELFORMAT_ARGB8888);
slouken@5472
    81
    SDL_assert(surface->pitch == surface->w * 4);
slouken@5472
    82
    SDL_memcpy(pixels, surface->pixels, surface->h * surface->pitch);
slouken@5421
    83
slouken@5421
    84
    hicon = CreateIconIndirect(&ii);
slouken@5421
    85
slouken@5421
    86
    DeleteObject(ii.hbmColor);
slouken@5421
    87
    DeleteObject(ii.hbmMask);
slouken@5421
    88
slouken@5421
    89
    if (!hicon) {
slouken@5421
    90
        WIN_SetError("CreateIconIndirect()");
slouken@5421
    91
        return NULL;
slouken@5421
    92
    }
slouken@5421
    93
slouken@5421
    94
    cursor = SDL_calloc(1, sizeof(*cursor));
slouken@5421
    95
    if (cursor) {
slouken@5421
    96
        cursor->driverdata = hicon;
slouken@5421
    97
    } else {
slouken@5421
    98
        DestroyIcon(hicon);
slouken@5421
    99
        SDL_OutOfMemory();
slouken@5421
   100
    }
slouken@5421
   101
slouken@5421
   102
    return cursor;
slouken@5421
   103
}
slouken@5421
   104
slouken@5421
   105
static void
slouken@5421
   106
WIN_FreeCursor(SDL_Cursor * cursor)
slouken@5421
   107
{
slouken@5421
   108
    HICON hicon = (HICON)cursor->driverdata;
slouken@5421
   109
slouken@5421
   110
    DestroyIcon(hicon);
slouken@5421
   111
    SDL_free(cursor);
slouken@5421
   112
}
slouken@5421
   113
slouken@5421
   114
static int
slouken@5421
   115
WIN_ShowCursor(SDL_Cursor * cursor)
slouken@5421
   116
{
slouken@5421
   117
    if (cursor) {
slouken@5421
   118
        SDL_cursor = (HCURSOR)cursor->driverdata;
slouken@5421
   119
    } else {
slouken@5421
   120
        SDL_cursor = NULL;
slouken@5421
   121
    }
slouken@5421
   122
    if (SDL_GetMouseFocus() != NULL) {
slouken@5421
   123
        SetCursor(SDL_cursor);
slouken@5421
   124
    }
slouken@5421
   125
    return 0;
slouken@5421
   126
}
slouken@5421
   127
slouken@5421
   128
static void
slouken@5421
   129
WIN_WarpMouse(SDL_Window * window, int x, int y)
slouken@5421
   130
{
slouken@5421
   131
    HWND hwnd = ((SDL_WindowData *) window->driverdata)->hwnd;
slouken@5421
   132
    POINT pt;
slouken@5421
   133
slouken@5421
   134
    pt.x = x;
slouken@5421
   135
    pt.y = y;
slouken@5421
   136
    ClientToScreen(hwnd, &pt);
slouken@5421
   137
    SetCursorPos(pt.x, pt.y);
slouken@5421
   138
}
slouken@5421
   139
slouken@5421
   140
static int
slouken@5421
   141
WIN_SetRelativeMouseMode(SDL_bool enabled)
slouken@5421
   142
{
slouken@5421
   143
    SDL_Unsupported();
slouken@5421
   144
    return -1;
slouken@5421
   145
}
slouken@5421
   146
slouken@1895
   147
void
slouken@1895
   148
WIN_InitMouse(_THIS)
slouken@1895
   149
{
slouken@5421
   150
    SDL_Mouse *mouse = SDL_GetMouse();
slouken@5421
   151
slouken@5421
   152
    mouse->CreateCursor = WIN_CreateCursor;
slouken@5421
   153
    mouse->ShowCursor = WIN_ShowCursor;
slouken@5421
   154
    mouse->FreeCursor = WIN_FreeCursor;
slouken@5421
   155
    mouse->WarpMouse = WIN_WarpMouse;
slouken@5421
   156
    mouse->SetRelativeMouseMode = WIN_SetRelativeMouseMode;
slouken@5421
   157
slouken@5421
   158
    SDL_SetDefaultCursor(WIN_CreateDefaultCursor());
slouken@1895
   159
}
slouken@1895
   160
slouken@1895
   161
void
slouken@1895
   162
WIN_QuitMouse(_THIS)
slouken@1895
   163
{
slouken@1895
   164
}
slouken@1895
   165
slouken@6044
   166
#endif /* SDL_VIDEO_DRIVER_WINDOWS */
slouken@6044
   167
slouken@1895
   168
/* vi: set ts=4 sw=4 expandtab: */