lua accumulate now receives a table of the draw parameters

git-svn-id: http://skia.googlecode.com/svn/trunk@9158 2bbb7eff-a529-9590-31e7-b0007b416f81

1 files changed, 147 insertions, 39 deletions

diff --git a/src/utils/SkLuaCanvas.cpp b/src/utils/SkLuaCanvas.cpp
index da56407db1..2c77c67b65 100644
--- a/src/utils/SkLuaCanvas.cpp
+++ b/src/utils/SkLuaCanvas.cpp
@@ -6,24 +6,88 @@
  */
 
 #include "SkLuaCanvas.h"
+#include "SkRRect.h"
 
 extern "C" {
     #include "lua.h"
 }
 
-void SkLuaCanvas::sendverb(const char str[]) {
-    lua_getglobal(fL, fFunc.c_str());
-    if (!lua_isfunction(fL, -1)) {
-        int t = lua_type(fL, -1);
-        SkDebugf("--- expected function %d\n", t);
+static void setfield_string(lua_State* L, const char key[], const char value[]) {
+    lua_pushstring(L, value);
+    lua_setfield(L, -2, key);
+}
+
+static void setfield_number(lua_State* L, const char key[], double value) {
+    lua_pushnumber(L, value);
+    lua_setfield(L, -2, key);
+}
+
+static void setfield_bool(lua_State* L, const char key[], bool value) {
+    lua_pushboolean(L, value);
+    lua_setfield(L, -2, key);
+}
+
+static void setfield_rect(lua_State* L, const char key[], const SkRect& r) {
+    lua_newtable(L);
+    setfield_number(L, "left", r.fLeft);
+    setfield_number(L, "top", r.fTop);
+    setfield_number(L, "right", r.fRight);
+    setfield_number(L, "bottom", r.fBottom);
+    lua_setfield(L, -2, key);
+}
+
+enum PaintUsage {
+    kText_PaintUsage,
+    kImage_PaintUsage,
+    kGeometry_PaintUsage
+};
+
+static const char* color2string(SkColor c, SkString* str) {
+    str->printf("0x%08X", c);
+    return str->c_str();
+}
+
+static void setfield_paint(lua_State* L, const SkPaint& p,
+                           PaintUsage pu = kGeometry_PaintUsage) {
+    SkString str;
+
+    lua_newtable(L);
+    setfield_bool(L, "aa", p.isAntiAlias());
+    setfield_string(L, "color", color2string(p.getColor(), &str));
+
+    if (kGeometry_PaintUsage == pu) {
+        if (SkPaint::kFill_Style != p.getStyle()) {
+            setfield_number(L, "stroke-width", p.getStrokeWidth());
+        }
+    }
+    lua_setfield(L, -2, "paint");
+}
+
+class AutoCallLua {
+public:
+    AutoCallLua(lua_State* L, const char func[], const char verb[]) : fL(L) {
+        lua_getglobal(L, func);
+        if (!lua_isfunction(L, -1)) {
+            int t = lua_type(L, -1);
+            SkDebugf("--- expected function %d\n", t);
+        }
+        
+        lua_newtable(L);
+        setfield_string(L, "verb", verb);
     }
-    lua_pushstring(fL, str);
 
-    if (lua_pcall(fL, 1, 0, 0) != LUA_OK) {
-        SkDebugf("lua err: %s\n", lua_tostring(fL, -1));
+    ~AutoCallLua() {
+        if (lua_pcall(fL, 1, 0, 0) != LUA_OK) {
+            SkDebugf("lua err: %s\n", lua_tostring(fL, -1));
+        }
+        lua_settop(fL, -1);
     }
-    lua_settop(fL, -1);
-}
+
+private:
+    lua_State* fL;
+};
+
+#define AUTO_LUA(verb)  AutoCallLua acl(fL, fFunc.c_str(), verb)
 
 ///////////////////////////////////////////////////////////////////////////////
 
@@ -42,43 +106,56 @@ SkLuaCanvas::SkLuaCanvas(int width, int height, lua_State* L, const char func[])
 SkLuaCanvas::~SkLuaCanvas() {}
 
 int SkLuaCanvas::save(SaveFlags flags) {
-    sendverb("save");
+    AUTO_LUA("save");
     return this->INHERITED::save(flags);
 }
 
 int SkLuaCanvas::saveLayer(const SkRect* bounds, const SkPaint* paint,
                              SaveFlags flags) {
-    sendverb("saveLayer");
+    AUTO_LUA("saveLayer");
+    if (bounds) {
+        setfield_rect(fL, "bounds", *bounds);
+    }
+    if (paint) {
+        setfield_paint(fL, *paint);
+    }
     return this->INHERITED::save(flags);
 }
 
 void SkLuaCanvas::restore() {
-    sendverb("restore");
+    AUTO_LUA("restore");
     this->INHERITED::restore();
 }
 
 bool SkLuaCanvas::translate(SkScalar dx, SkScalar dy) {
-    sendverb("translate");
+    AUTO_LUA("translate");
+    setfield_number(fL, "dx", dx);
+    setfield_number(fL, "dy", dy);
     return this->INHERITED::translate(dx, dy);
 }
 
 bool SkLuaCanvas::scale(SkScalar sx, SkScalar sy) {
-    sendverb("scale");
+    AUTO_LUA("scale");
+    setfield_number(fL, "sx", sx);
+    setfield_number(fL, "sy", sy);
     return this->INHERITED::scale(sx, sy);
 }
 
 bool SkLuaCanvas::rotate(SkScalar degrees) {
-    sendverb("rotate");
+    AUTO_LUA("rotate");
+    setfield_number(fL, "degrees", degrees);
     return this->INHERITED::rotate(degrees);
 }
 
 bool SkLuaCanvas::skew(SkScalar sx, SkScalar sy) {
-    sendverb("skew");
+    AUTO_LUA("skew");
+    setfield_number(fL, "sx", sx);
+    setfield_number(fL, "sy", sy);
     return this->INHERITED::skew(sx, sy);
 }
 
 bool SkLuaCanvas::concat(const SkMatrix& matrix) {
-    sendverb("concat");
+    AUTO_LUA("concat");
     return this->INHERITED::concat(matrix);
 }
 
@@ -87,94 +164,124 @@ void SkLuaCanvas::setMatrix(const SkMatrix& matrix) {
 }
 
 bool SkLuaCanvas::clipRect(const SkRect& r, SkRegion::Op op, bool doAA) {
-    sendverb("clipRect");
+    AUTO_LUA("clipRect");
+    setfield_rect(fL, "rect", r);
+    setfield_bool(fL, "aa", doAA);
     return this->INHERITED::clipRect(r, op, doAA);
 }
 
 bool SkLuaCanvas::clipRRect(const SkRRect& rrect, SkRegion::Op op, bool doAA) {
-    sendverb("clipRRect");
+    AUTO_LUA("clipRRect");
+    setfield_bool(fL, "aa", doAA);
     return this->INHERITED::clipRRect(rrect, op, doAA);
 }
 
 bool SkLuaCanvas::clipPath(const SkPath& path, SkRegion::Op op, bool doAA) {
-    sendverb("clipPath");
+    AUTO_LUA("clipPath");
+    setfield_bool(fL, "aa", doAA);
     return this->INHERITED::clipPath(path, op, doAA);
 }
 
 bool SkLuaCanvas::clipRegion(const SkRegion& deviceRgn, SkRegion::Op op) {
-    sendverb("clipRegion");
+    AUTO_LUA("clipRegion");
     return this->INHERITED::clipRegion(deviceRgn, op);
 }
 
 void SkLuaCanvas::drawPaint(const SkPaint& paint) {
-    sendverb("drawPaint");
+    AUTO_LUA("drawPaint");
+    setfield_paint(fL, paint);
 }
 
 void SkLuaCanvas::drawPoints(PointMode mode, size_t count,
                                const SkPoint pts[], const SkPaint& paint) {
-    sendverb("drawPoints");
+    AUTO_LUA("drawPoints");
+    setfield_paint(fL, paint);
 }
 
 void SkLuaCanvas::drawOval(const SkRect& rect, const SkPaint& paint) {
-    sendverb("drawOval");
+    AUTO_LUA("drawOval");
+    setfield_rect(fL, "rect", rect);
+    setfield_paint(fL, paint);
 }
 
 void SkLuaCanvas::drawRect(const SkRect& rect, const SkPaint& paint) {
-    sendverb("drawRect");
+    AUTO_LUA("drawRect");
+    setfield_rect(fL, "rect", rect);
+    setfield_paint(fL, paint);
 }
 
 void SkLuaCanvas::drawRRect(const SkRRect& rrect, const SkPaint& paint) {
-    sendverb("drawRRect");
+    AUTO_LUA("drawRRect");
+    setfield_rect(fL, "rect", rrect.getBounds());
+    setfield_paint(fL, paint);
 }
 
 void SkLuaCanvas::drawPath(const SkPath& path, const SkPaint& paint) {
-    sendverb("drawPath");
+    AUTO_LUA("drawPath");
+    setfield_rect(fL, "bounds", path.getBounds());
+    setfield_paint(fL, paint);
 }
 
 void SkLuaCanvas::drawBitmap(const SkBitmap& bitmap, SkScalar x, SkScalar y,
                                const SkPaint* paint) {
-    sendverb("drawBitmap");
+    AUTO_LUA("drawBitmap");
+    if (paint) {
+        setfield_paint(fL, *paint, kImage_PaintUsage);
+    }
 }
 
 void SkLuaCanvas::drawBitmapRectToRect(const SkBitmap& bitmap, const SkRect* src,
                                    const SkRect& dst, const SkPaint* paint) {
-    sendverb("drawBitmapRectToRect");
+    AUTO_LUA("drawBitmapRectToRect");
+    if (paint) {
+        setfield_paint(fL, *paint, kImage_PaintUsage);
+    }
 }
 
 void SkLuaCanvas::drawBitmapMatrix(const SkBitmap& bitmap, const SkMatrix& m,
                                      const SkPaint* paint) {
-    sendverb("drawBitmapMatrix");
+    AUTO_LUA("drawBitmapMatrix");
+    if (paint) {
+        setfield_paint(fL, *paint, kImage_PaintUsage);
+    }
 }
 
 void SkLuaCanvas::drawSprite(const SkBitmap& bitmap, int x, int y,
                                const SkPaint* paint) {
-    sendverb("drawSprite");
+    AUTO_LUA("drawSprite");
+    if (paint) {
+        setfield_paint(fL, *paint, kImage_PaintUsage);
+    }
 }
 
 void SkLuaCanvas::drawText(const void* text, size_t byteLength, SkScalar x,
                              SkScalar y, const SkPaint& paint) {
-    sendverb("drawText");
+    AUTO_LUA("drawText");
+    setfield_paint(fL, paint, kText_PaintUsage);
 }
 
 void SkLuaCanvas::drawPosText(const void* text, size_t byteLength,
                                 const SkPoint pos[], const SkPaint& paint) {
-    sendverb("drawPosText");
+    AUTO_LUA("drawPosText");
+    setfield_paint(fL, paint, kText_PaintUsage);
 }
 
 void SkLuaCanvas::drawPosTextH(const void* text, size_t byteLength,
                                  const SkScalar xpos[], SkScalar constY,
                                  const SkPaint& paint) {
-    sendverb("drawPosTextH");
+    AUTO_LUA("drawPosTextH");
+    setfield_paint(fL, paint, kText_PaintUsage);
 }
 
 void SkLuaCanvas::drawTextOnPath(const void* text, size_t byteLength,
                                    const SkPath& path, const SkMatrix* matrix,
                                    const SkPaint& paint) {
-    sendverb("drawTextOnPath");
+    AUTO_LUA("drawTextOnPath");
+    setfield_paint(fL, paint, kText_PaintUsage);
 }
 
 void SkLuaCanvas::drawPicture(SkPicture& picture) {
-    sendverb("drawPicture");
+    AUTO_LUA("drawPicture");
     // call through so we can see the nested picture ops
     this->INHERITED::drawPicture(picture);
 }
@@ -184,9 +291,10 @@ void SkLuaCanvas::drawVertices(VertexMode vmode, int vertexCount,
                                  const SkColor colors[], SkXfermode* xmode,
                                  const uint16_t indices[], int indexCount,
                                  const SkPaint& paint) {
-    sendverb("drawVertices");
+    AUTO_LUA("drawVertices");
+    setfield_paint(fL, paint);
 }
 
 void SkLuaCanvas::drawData(const void* data, size_t length) {
-    sendverb("drawData");
+    AUTO_LUA("drawData");
 }