Update CairoHelper

Author: rodlie

Helpers/CairoHelper.cpp

@@ -41,7 +41,7 @@ void
 CairoHelper::applyScale(cairo_t *cr,
                         const _XY &scale)
 {
-    if (!cr || (scale.x == 0. && scale.y == 0.)) { return; }
+    if (!cr || (scale.x == 1. && scale.y == 1.)) { return; }
     cairo_scale(cr, scale.x, scale.y);
 }
 
@@ -50,7 +50,7 @@ CairoHelper::applyScale(cairo_t *cr,
                         const _XY &scale,
                         const _XY &origin)
 {
-    if (!cr || (scale.x == 0. && scale.y == 0.)) { return; }
+    if (!cr || (scale.x == 1. && scale.y == 1.)) { return; }
     cairo_translate(cr, origin.x, origin.y);
     cairo_scale(cr, scale.x, scale.y);
     cairo_translate(cr, -origin.x, -origin.y);
@@ -92,7 +92,6 @@ CairoHelper::applyTransform(cairo_t *cr,
                             const _Transform &transform)
 {
     if (!cr) { return; }
-    if (transform.flip) { applyFlip(cr, transform.height); }
     if (transform.position) { applyPosition(cr, transform.origin); }
     applyScale(cr, transform.scale, transform.origin);
     applySkew(cr, transform.skew, transform.origin);

Helpers/CairoHelper.h

@@ -34,11 +34,8 @@ class CairoHelper
         _XY origin;
         _XY scale;
         _XY skew;
-        int width;
-        int height;
         double rotate;
         bool position;
-        bool flip;
     };
     /** @brief apply flip */
     static void applyFlip(cairo_t *cr,