converted button to c

include/Monet/MOButton.h

@@ -1,10 +1,9 @@
+#import <Monet/MOApplication.h>
+#import <Monet/MORect.h>
 #import <Monet/MOView.h>
 
-// @interface MOButton : MOView
-// {
-// 	struct MOButtonData *buttonData;
-// }
-// 
-// - (void)clicked;
-// 
-// @end
+typedef void (*MOButtonClickedCallback)(MOView *self);
+
+MOView *MOButtonCreate(MORect aFrame, MOApplication *aApplication);
+
+void MOButtonSetClickedCallback(MOView *self, MOButtonClickedCallback aCallback);

src/Monet/MOButton.m

@@ -1,63 +1,70 @@
 #import <Monet/MOButton.h>
 
+#import <cobject/cobject.h>
+
 #import <Monet/MOApplication.h>
 #import <Monet/MOPoint.h>
 #import <Monet/MORect.h>
 #import <Monet/MOView.h>
 
-/*
-
-struct MOButtonData
+struct _MOButtonExtra
 {
-	BOOL isMouseDown;
-	BOOL isMouseInside;
-};
+	COGuts *guts;
 
-@implementation MOButton : MOView
+	bool   isMouseDown;
+	bool   isMouseInside;
+
+	MOButtonClickedCallback clickedCallback;
+};
+typedef struct _MOButtonExtra MOButtonExtra;
 
-- (id)initWithFrame: (MORect)aFrame app: (MOApplication *)aApp;
+bool _MOButtonIsMousePressed(MOView *self)
 {
-	if ((self = [super initWithFrame: aFrame app: aApp]))
-	{
-		buttonData = calloc(1, sizeof (struct MOButtonData));
-		buttonData->isMouseDown   = NO;
-		buttonData->isMouseInside = NO;
-	}
-
-	return self;
-}
+	MOButtonExtra *extra = MOViewGetExtra(self);
 
-#pragma mark -
+	MORect bounds = MOViewGetBounds(self);
+	MOPoint untranslatedPoint = MOApplicationGetMouseLocation(MOViewGetApplication(self));
+	MOPoint point = MOViewConvertPointFromScreen(self, untranslatedPoint);
+	return extra->isMouseDown && MORectContainsPoint(bounds, point);
+}
 
-- (BOOL)isPressed
+bool _MOButtonMouseButtonPressed(MOView *self, MOEvent *aEvent)
 {
-	return buttonData->isMouseDown && MORectContainsPoint(
-		[self bounds],
-		[self convertPointFromScreen: MOApplicationGetMouseLocation([self app])]);
-}
+	MOButtonExtra *extra = MOViewGetExtra(self);
 
-#pragma mark -
+	extra->isMouseDown = YES;
 
-- (void)mouseDown: (MOEvent *)aEvent
-{
-	buttonData->isMouseDown = YES;
+	return true;
 }
 
-- (void)mouseUp: (MOEvent *)aEvent
+bool _MOButtonMouseButtonReleased(MOView *self, MOEvent *aEvent)
 {
-	if ([self isPressed])
-		[self clicked];
+	MOButtonExtra *extra = MOViewGetExtra(self);
 
-	buttonData->isMouseDown = NO;
-}
+	if (_MOButtonIsMousePressed(self))
+		extra->clickedCallback(self);
 
-#pragma mark -
+	extra->isMouseDown = NO;
 
-- (void)clicked
-{
-	;
+	return true;
 }
 
-@end
+MOView *MOButtonCreate(MORect aFrame, MOApplication *aApplication)
+{
+	MOView *view = MOViewCreate(aFrame, aApplication);
+
+	MOButtonExtra *extra = calloc(1, sizeof (MOButtonExtra));
+	COInitialize(extra);
+	MOViewSetExtra(view, extra);
+
+	MOViewSetMouseButtonPressedCallback(view, &_MOButtonMouseButtonPressed);
+	MOViewSetMouseButtonReleasedCallback(view, &_MOButtonMouseButtonReleased);
 
-*/
+	return view;
+}
+
+void MOButtonSetClickedCallback(MOView *self, MOButtonClickedCallback aCallback)
+{
+	MOButtonExtra *extra = MOViewGetExtra(self);
+	extra->clickedCallback = aCallback;
+}

src/Monet/MOImage.m

@@ -21,7 +21,10 @@
 	// Load file
 	SDL_Surface *surface = IMG_Load(aFilename);
 	if (!surface)
-		[NSException raise: @"SDLException" format: @"IMG_Load failed: %s\n", SDL_GetError()];
+	{
+		fprintf(stderr, "IMG_Load failed (%s)\n", SDL_GetError());
+		exit(1);
+	}
 
 	// Create texture
 	glGenTextures(1, &image->textureName);
@@ -47,8 +50,11 @@
 			textureFormat = GL_BGR;
 	}
 	else
+	{
 		// TODO handle gracefully
-		[NSException raise: @"OpenGLException" format: @"glTexImage2D preparation failed: image is not in truecolor (filename = %@)\n", aFilename];
+		fprintf(stderr, "glTexImage2D preparation failed: image is not in truecolor (filename = %s)\n", aFilename);
+		exit(1);
+	}
 
 	// Set size
 	image->size = MOSizeMake(surface->w, surface->h);

src/Monet/MOView.m

@@ -1,5 +1,6 @@
 #import <Monet/MOView.h>
 
+#import <cobject/cobject.h>
 #import <OpenGL/gl.h>
 #import <OpenGL/glu.h>