From bfa1108de9af261f6095a8b823ed78a27a8f6a99 Mon Sep 17 00:00:00 2001
From: Tj Holowaychuk <tj@vision-media.ca>
Date: Mon, 15 Nov 2010 14:38:25 -0800
Subject: [PATCH] More putImageData()
---
src/CanvasRenderingContext2d.cc | 29 +++++++++++++++++++++++++----
1 file changed, 25 insertions(+), 4 deletions(-)
diff --git a/src/CanvasRenderingContext2d.cc b/src/CanvasRenderingContext2d.cc
index 5f6cd5b..18aee4c 100644
--- a/src/CanvasRenderingContext2d.cc
+++ b/src/CanvasRenderingContext2d.cc
@@ -385,6 +385,10 @@ Context2d::New(const Arguments &args) {
/*
* Put image data.
+ *
+ * - imageData, dx, dy
+ * - imageData, dx, dy, sx, sy, dw, dh
+ *
*/
Handle<Value>
@@ -405,13 +409,30 @@ Context2d::PutImageData(const Arguments &args) {
, sy = 0
, dx = args[1]->NumberValue()
, dy = args[2]->NumberValue()
- , dw = arr->width()
- , dh = arr->height();
+ , dw
+ , dh
+ , rows
+ , cols;
+
+ switch (args.Length()) {
+ case 3:
+ cols = arr->width();
+ rows = arr->height();
+ break;
+ case 7:
+ sx = args[3]->NumberValue();
+ sx = args[4]->NumberValue();
+ dw = args[5]->NumberValue();
+ dh = args[6]->NumberValue();
+ break;
+ default:
+ return ThrowException(Exception::Error(String::New("invalid arguments")));
+ }
uint8_t *srcRows = src;
- for (int y = 0; y < dh; ++y) {
+ for (int y = 0; y < rows; ++y) {
uint32_t *row = (uint32_t *)(dst + dstStride * (y + dy));
- for (int x = 0; x < dw; ++x) {
+ for (int x = 0; x < cols; ++x) {
int bx = x * 4;
uint32_t *pixel = row + x + dx;