This repository has been archived by the owner on Feb 11, 2021. It is now read-only.
SDL_cocoamouse.m
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/*
SDL - Simple DirectMedia Layer
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Copyright (C) 1997-2011 Sam Lantinga
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This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Sam Lantinga
slouken@libsdl.org
*/
#include "SDL_config.h"
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#include "SDL_events.h"
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#include "SDL_cocoavideo.h"
#include "../../events/SDL_mouse_c.h"
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static SDL_Cursor *
Cocoa_CreateDefaultCursor()
{
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
NSCursor *nscursor;
SDL_Cursor *cursor = NULL;
nscursor = [NSCursor arrowCursor];
if (nscursor) {
cursor = SDL_calloc(1, sizeof(*cursor));
if (cursor) {
cursor->driverdata = nscursor;
[nscursor retain];
}
}
[pool release];
return cursor;
}
static SDL_Cursor *
Cocoa_CreateCursor(SDL_Surface * surface, int hot_x, int hot_y)
{
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
NSImage *nsimage;
NSCursor *nscursor = NULL;
SDL_Cursor *cursor = NULL;
nsimage = Cocoa_CreateImage(surface);
if (nsimage) {
nscursor = [[NSCursor alloc] initWithImage: nsimage hotSpot: NSMakePoint(hot_x, hot_y)];
}
if (nscursor) {
cursor = SDL_calloc(1, sizeof(*cursor));
if (cursor) {
cursor->driverdata = nscursor;
}
}
[pool release];
return cursor;
}
static void
Cocoa_FreeCursor(SDL_Cursor * cursor)
{
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
NSCursor *nscursor = (NSCursor *)cursor->driverdata;
[nscursor release];
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SDL_free(cursor);
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[pool release];
}
static int
Cocoa_ShowCursor(SDL_Cursor * cursor)
{
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
if (SDL_GetMouseFocus()) {
if (cursor) {
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NSCursor *nscursor = (NSCursor *)cursor->driverdata;
[nscursor set];
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[NSCursor unhide];
} else {
[NSCursor hide];
}
}
[pool release];
return 0;
}
static void
Cocoa_WarpMouse(SDL_Window * window, int x, int y)
{
CGPoint point;
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point.x = (float)window->x + x;
point.y = (float)window->y + y;
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CGWarpMouseCursorPosition(point);
}
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static int
Cocoa_SetRelativeMouseMode(SDL_bool enabled)
{
CGError result;
if (enabled) {
result = CGAssociateMouseAndMouseCursorPosition(NO);
} else {
result = CGAssociateMouseAndMouseCursorPosition(YES);
}
if (result != kCGErrorSuccess) {
SDL_SetError("CGAssociateMouseAndMouseCursorPosition() failed");
return -1;
}
return 0;
}
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void
Cocoa_InitMouse(_THIS)
{
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SDL_Mouse *mouse = SDL_GetMouse();
mouse->CreateCursor = Cocoa_CreateCursor;
mouse->ShowCursor = Cocoa_ShowCursor;
mouse->FreeCursor = Cocoa_FreeCursor;
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mouse->WarpMouse = Cocoa_WarpMouse;
mouse->SetRelativeMouseMode = Cocoa_SetRelativeMouseMode;
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SDL_SetDefaultCursor(Cocoa_CreateDefaultCursor());
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static int
ConvertMouseButtonToSDL(int button)
{
switch (button)
{
case 0:
return(SDL_BUTTON_LEFT); /* 1 */
case 1:
return(SDL_BUTTON_RIGHT); /* 3 */
case 2:
return(SDL_BUTTON_MIDDLE); /* 2 */
}
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return button+1;
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}
void
Cocoa_HandleMouseEvent(_THIS, NSEvent *event)
{
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SDL_Mouse *mouse = SDL_GetMouse();
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if (mouse->relative_mode &&
([event type] == NSMouseMoved ||
[event type] == NSLeftMouseDragged ||
[event type] == NSRightMouseDragged ||
[event type] == NSOtherMouseDragged)) {
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float x = [event deltaX];
float y = [event deltaY];
SDL_SendMouseMotion(mouse->focus, 1, (int)x, (int)y);
}
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void
Cocoa_HandleMouseWheel(SDL_Window *window, NSEvent *event)
{
float x = [event deltaX];
float y = [event deltaY];
if (x > 0) {
x += 0.9f;
} else if (x < 0) {
x -= 0.9f;
}
if (y > 0) {
y += 0.9f;
} else if (y < 0) {
y -= 0.9f;
}
SDL_SendMouseWheel(window, (int)x, (int)y);
}
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void
Cocoa_QuitMouse(_THIS)
{
}
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/* vi: set ts=4 sw=4 expandtab: */