void scroll_layer_set_content_offset(ScrollLayer *l, GPoint offset, bool animated) {
SCROLL_GET;
if (gpoint_equal(&scroll->content_sublayer->frame.origin,&offset))
return;
offset.x=0;
GPoint oldOffset=scroll_layer_get_content_offset(l);
GRect to=scroll_layer_get_new_content_rect(l,offset);
if (animated) {
if (scroll->animation)
property_animation_destroy(scroll->animation);
scroll->animation=property_animation_create_layer_frame(scroll->content_sublayer,0,&to);
double duration=to.origin.y-oldOffset.y;
if (duration<25||duration>-25)
duration=abs(duration)*SCROLL_LAYER_SCROLL_SPEED;
else
duration=1;
animation_set_duration((Animation*)scroll->animation,duration);
animation_schedule((Animation*)scroll->animation);
}
else {
scroll->content_sublayer->frame.origin=offset;
layer_mark_dirty(scroll_layer);
}
if (scroll->callbacks.content_offset_changed_handler!=0)
scroll->callbacks.content_offset_changed_handler(l,scroll->context);
}
static void thread_offset_changed_handler(ScrollLayer *scroll_layer, void *context)
{
GPoint offset = scroll_layer_get_content_offset(scroll_layer);
bool hide = (scroll_layer_size.h + offset.y - window_frame.size.h) > THREAD_WINDOW_HEIGHT;
if(thread_inverter_hidden != hide)
{
thread_inverter_hidden = hide;
layer_set_hidden(inverter_layer_get_layer(thread_inverter_layer), thread_inverter_hidden);
if(!hide)
{
layer_set_frame(inverter_layer_get_layer(thread_inverter_layer), layer_get_frame(text_layer_get_layer(thread_view_comments_layer)));
}
}
}
void scroll_layer_shadow_layer_update_func (Layer* me,GContext* ctx) {
ScrollLayer* scroll_layer=(ScrollLayer*)me->parent;
SDL_Surface* scroll_shadow=getSimulatorImage(SIM_IMG_SCROLL_SHADOW);
GPoint topOffset=getTopOffset();
SDL_Surface* screen=getTopScreen ();
GPoint offset=scroll_layer_get_content_offset (scroll_layer);
GSize size=scroll_layer_get_content_size (scroll_layer);
GSize frameSize=me->frame.size;
SDL_Rect src,dst;
if (offset.y<0) {
src=(SDL_Rect){0,15,144,15};
dst=(SDL_Rect){topOffset.x,topOffset.y,144,15};
SDL_gfxBlitRGBA(scroll_shadow,&src,screen,&dst);
}
if (offset.y-((Layer*)scroll_layer)->frame.size.h!=-size.h) {
src=(SDL_Rect){0,0,144,15};
dst=(SDL_Rect){topOffset.x,topOffset.y+frameSize.h-15,144,15};
SDL_gfxBlitRGBA(scroll_shadow,&src,screen,&dst);
}
}
void scroll_layer_scroll_down_click_handler(ClickRecognizerRef recognizer, void *l) {
ScrollLayer* scroll_layer=(ScrollLayer*)l;
GPoint offset=scroll_layer_get_content_offset(scroll_layer);
offset.y-=SCROLL_LAYER_SCROLL_AMOUNT;
scroll_layer_set_content_offset(scroll_layer,offset,true);
}
void scroll_layer_scroll_up_click_handler(ClickRecognizerRef recognizer, ScrollLayer *scroll_layer) {
GPoint offset=scroll_layer_get_content_offset(scroll_layer);
offset.y+=SCROLL_LAYER_SCROLL_AMOUNT;
scroll_layer_set_content_offset(scroll_layer,offset,true);
}
