added transparency spec

[swftools.git] / spec / transparency.py

diff --git a/spec/transparency.py b/spec/transparency.py
new file mode 100644 (file)
index 0000000..4bdb4f8
--- /dev/null
+++ b/spec/transparency.py
@@ -0,0 +1,82 @@
+import sys
+from pdflib_py import * 
+from math import sin,cos
+import Image
+import ImageDraw
+
+img = Image.new("L", (3, 3))
+draw = ImageDraw.Draw(img)
+draw.point((0,1), fill=255)
+draw.point((0,2), fill=255)
+draw.point((1,0), fill=255)
+draw.point((1,2), fill=255)
+draw.point((2,0), fill=255)
+draw.point((2,1), fill=255)
+img.save("/tmp/mask1.png")
+
+img = Image.new("L", (16, 1))
+draw = ImageDraw.Draw(img)
+for i in range(16):
+    draw.point((i,0), fill=i*16)
+img.save("/tmp/mask2.png")
+
+img = Image.new("RGB", (3, 3))
+draw = ImageDraw.Draw(img)
+draw.point((0,1), fill=(0,0,0))
+draw.point((0,2), fill=(255,0,0))
+draw.point((1,0), fill=(0,255,0))
+draw.point((1,2), fill=(0,0,255))
+draw.point((2,0), fill=(255,255,0))
+draw.point((2,1), fill=(0,255,255))
+img.save("/tmp/img1.png")
+
+img = Image.new("RGB", (16, 1))
+draw = ImageDraw.Draw(img)
+for i in range(16):
+    draw.point((i,0), fill=(0,255,0))
+img.save("/tmp/img2.png")
+
+p = PDF_new() 
+PDF_open_file(p, "transparency.pdf")
+font = PDF_load_font(p, "Helvetica", "host", "")
+
+PDF_set_parameter(p, "usercoordinates", "true")
+
+width = 400
+height = 400
+PDF_begin_page(p, width, height)
+
+PDF_setcolor(p, "fill", "rgb", 0.0,0.0,0.0,1.0)
+PDF_moveto(p, 0,0)
+PDF_lineto(p, width, 0)
+PDF_lineto(p, width, height)
+PDF_lineto(p, 0, height)
+PDF_lineto(p, 0, 0)
+PDF_fill(p)
+
+PDF_setfont(p, font, 10.0)
+PDF_setcolor(p, "fill", "rgb", 1.0,1.0,1.0,1.0)
+PDF_set_text_pos(p, 50, 205);PDF_show(p, "abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz")
+PDF_set_text_pos(p, 50, 105);PDF_show(p, "abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz")
+
+mask = PDF_load_image(p, "png", "/tmp/mask1.png", "mask")
+i = PDF_load_image(p, "png", "/tmp/img1.png", "masked "+str(mask))
+PDF_place_image(p, i, 100, 300, 20)
+
+mask2 = PDF_load_image(p, "png", "/tmp/mask2.png", "mask")
+i2 = PDF_load_image(p, "png", "/tmp/img2.png", "masked "+str(mask2))
+PDF_place_image(p, i2, 0, 200, 25)
+
+PDF_setcolor(p, "fill", "rgb", 1.0,1.0,1.0,1.0)
+gstate = PDF_create_gstate(p, "opacityfill 0.25") # blendmode multiply opacityfill 0.5")
+PDF_set_gstate(p, gstate)
+PDF_moveto(p, 50, 75)
+PDF_lineto(p, 50+300, 75)
+PDF_lineto(p, 50+300, 150)
+PDF_lineto(p, 50, 150)
+PDF_lineto(p, 50, 75)
+PDF_fill(p)
+
+PDF_end_page(p)
+PDF_close(p)
+PDF_delete(p);