Add SVGImage_Render sample

2026-01-05 03:20:08 +01:00 · 2019-09-04 17:21:37 -07:00
parent 5a3f0dd98e
commit 83e2212bf6
3 changed files with 128 additions and 7 deletions
--- a/demo/SVGImage_Bitmap.py
+++ b/demo/SVGImage_Bitmap.py
@@ -0,0 +1,107 @@
+
+import os
+import glob
+import wx
+from wx.svg import SVGimage
+
+#----------------------------------------------------------------------
+
+class SVGBitmapDisplay(wx.Panel):
+    """
+    A simple panel containing a static box and a rasterized SVG image
+    """
+    def __init__(self, parent, bmp_size, *args, **kw):
+        wx.Panel.__init__(self, parent, *args, **kw)
+        self.bmp_size = wx.Size(*bmp_size)
+        self.statbmp = wx.StaticBitmap(self, bitmap=wx.Bitmap(*self.bmp_size))
+        label='{}x{}'.format(self.bmp_size.width, self.bmp_size.height)
+        sbox = wx.StaticBoxSizer(wx.VERTICAL, self, label)
+        sbox.Add(self.statbmp)
+        self.SetSizer(sbox)
+
+
+    def UpdateSVG(self, svg_filename):
+        img = SVGimage.CreateFromFile(svg_filename)
+        bmp = img.ConvertToScaledBitmap(self.bmp_size, self)
+        self.statbmp.SetBitmap(bmp)
+        #print(bmp.GetSize())
+
+
+#----------------------------------------------------------------------
+
+class TestPanel(wx.Panel):
+    def __init__(self, parent, log):
+        self.log = log
+        wx.Panel.__init__(self, parent, -1)
+
+        self.listbox = wx.ListBox(self, style=wx.LB_SINGLE, size=(250, -1))
+        self.listbox.AppendItems(glob.glob(os.path.join('data', '*.svg')))
+
+        self.updateables = []
+        rightSizer = wx.BoxSizer(wx.VERTICAL)
+        topRowSizer = wx.BoxSizer(wx.HORIZONTAL)
+
+        # Add a few smallish bitmaps in a row
+        for d in [32, 64, 128]:
+            sbd = SVGBitmapDisplay(self, (d,d))
+            self.updateables.append(sbd)
+            topRowSizer.Add(sbd, wx.SizerFlags().Border().Top())
+
+        rightSizer.Add(topRowSizer)
+
+        # and add another, larger one below that row
+        sbd = SVGBitmapDisplay(self, (256,256))
+        self.updateables.append(sbd)
+        rightSizer.Add(sbd)
+
+        self.Sizer = wx.BoxSizer(wx.HORIZONTAL)
+        self.Sizer.Add(self.listbox, wx.SizerFlags(1).Border(wx.ALL, 10).Expand())
+        self.Sizer.Add(rightSizer, wx.SizerFlags(2).Border(wx.RIGHT|wx.BOTTOM|wx.TOP, 10).Expand())
+
+        self.Bind(wx.EVT_LISTBOX, self.OnSelectItem)
+        self.listbox.SetSelection(0)
+
+        # Load the first SVG in the list into the static bitmaps
+        self.UpdateAll(self.listbox.GetString(0))
+
+
+    def OnSelectItem(self, evt):
+        filename = self.listbox.GetStringSelection()
+        self.UpdateAll(filename)
+
+
+    def UpdateAll(self, svg_filename):
+        for item in self.updateables:
+            item.UpdateSVG(svg_filename)
+        self.Layout()
+
+#----------------------------------------------------------------------
+
+def runTest(frame, nb, log):
+    win = TestPanel(nb, log)
+    return win
+
+#----------------------------------------------------------------------
+
+
+
+overview = """<html><body>
+<h2><center>SVGImage</center></h2>
+
+The wx.svg.SVGimage class provides the ability to load, parse and render
+Scalable Vector Graphics (SVG) files. The advantage of SVG files is that
+they can be used to create bitmaps of any size without loss of quality.
+
+This sample demonstrates rasterizing an SVG image to wx.Bitmaps of various
+sizes.
+
+</body></html>
+"""
+
+
+
+if __name__ == '__main__':
+    import sys,os
+    import run
+    run.main(['', os.path.basename(sys.argv[0])] + sys.argv[1:])
+