public void OnGUI(){
if (Event.current.type == EventType.MouseUp || (isDragging && stopDragging)){
textureState=UFTTextureState.passive;
if (isDragging){
isDragging = false;
if (UFTAtlasEditorEventManager.onStopDragging!=null)
UFTAtlasEditorEventManager.onStopDragging(this);
if (UFTAtlasEditorEventManager.onAtlasChange!=null)
UFTAtlasEditorEventManager.onAtlasChange();
}
} else if (Event.current.type == EventType.MouseDown && canvasRect.Contains (Event.current.mousePosition)){
textureState=UFTTextureState.onDrag;
isDragging = true;
textureState=UFTTextureState.onDrag;
mouseStartPosition=Event.current.mousePosition;
if (UFTAtlasEditorEventManager.onStartDragging!=null)
UFTAtlasEditorEventManager.onStartDragging(this);
Event.current.Use();
stopDragging=false;
}
Color color=GUI.color;
if (isDragging){
Vector2 currentOffset=Event.current.mousePosition-mouseStartPosition;
if (Event.current.type == EventType.Repaint){
canvasRect.x+=currentOffset.x;
canvasRect.y+=currentOffset.y;
if (canvasRect.x < 0){
canvasRect.x=0;
}
if (canvasRect.y <0){
canvasRect.y=0;
}
if (canvasRect.xMax > (int)uftAtlas.atlasWidth){
canvasRect.x= (int)uftAtlas.atlasWidth-texture.width;
}
if (canvasRect.yMax > (int)uftAtlas.atlasHeight){
canvasRect.y= (int)uftAtlas.atlasHeight-texture.height;
}
mouseStartPosition=Event.current.mousePosition;
}
if (UFTAtlasEditorEventManager.onDragInProgress!=null)
UFTAtlasEditorEventManager.onDragInProgress();
//if dragging lets color it to drag color border
GUI.color=UFTTextureUtil.borderColorDict[UFTTextureState.onDrag];
// check is mouse under texture, if not, initialize dropping
if (Event.current.type==EventType.Repaint && !canvasRect.Contains (Event.current.mousePosition))
stopDragging=true;
}
if (isSizeInvalid){
long currentTime=System.DateTime.Now.Ticks;
if (controlBlinkTime==null){
controlBlinkTime=currentTime+blinkTimeout;
currentBlinkColor=blinkColor1;
}
if (controlBlinkTime <= currentTime){
controlBlinkTime=currentTime+blinkTimeout;
currentBlinkColor=(currentBlinkColor==blinkColor1)?blinkColor2:blinkColor1;
}
GUI.color=currentBlinkColor;
if (UFTAtlasEditorEventManager.onNeedToRepaint!=null)
UFTAtlasEditorEventManager.onNeedToRepaint();
}
GUI.DrawTexture(canvasRect,texture,ScaleMode.ScaleToFit,true);
//EditorGUI.DrawPreviewTexture(canvasRect,texture);
if (isDragging || isSizeInvalid)
GUI.color=color;
}
