update slides

resources/slides_transitions.lua

 function scale_text_delta(template, delta)
     template = template.slide
     for i = 1, #template do
         local paint = template[i].paint
         paint:setTextSize(paint:getTextSize() + delta)
     end
 end
 
 function slide_transition(prev, next, is_forward)
     local rec = {
@@ skipping 21 matching lines @@
         rec.step_x = 15
         rec.isDone = function (self) return self.curr_x >= 0 end
     end
     return rec
 end
 
 function sqr(value) return value * value end
 
 function set_blur(paint, alpha)
     local sigma = sqr(1 - alpha) * 20
---    paint:setImageFilter(Sk.newBlurImageFilter(sigma, sigma))
+    if gUseBlurInTransitions then
+        paint:setImageFilter(Sk.newBlurImageFilter(sigma, sigma))
+    end
     paint:setAlpha(alpha)
 end
 
 function fade_slide_transition(prev, next, is_forward)
     local rec = {
         paint = Sk.newPaint(),
         prevDrawable = prev,
         nextDrawable = next,
         proc = function(self, canvas, drawSlideProc)
             if self:isDone() then
@@ skipping 144 matching lines @@
 end
 
 gTransitionTable = {
     fade = fade_transition,
     slide = slide_transition,
     fade_slide = fade_slide_transition,
     rotate = rotate_transition,
     zoom = zoom_transition,
 }