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cztomczakcztomczak
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Added an example of saving browser view as an image to cefadvanced.py.
Updated cefwxpanel samples. Fixed panda3d example, the browser was in grayscale.
1 parent ba2f430 commit 752766a

6 files changed

Lines changed: 91 additions & 28 deletions

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‎cefpython/cef1/windows/binaries/cefadvanced.html‎

Lines changed: 46 additions & 19 deletions
Original file line numberDiff line numberDiff line change
@@ -6,6 +6,7 @@
66
<style>
77
body { font: 13px Segoe UI, Arial; line-height: 1.4em; }
88
pre { background: #ddd; font: 12px Consolas, Courier New; }
9+
h4 { color: #666; margin: 1em 0em; }
910
</style>
1011
</head>
1112
<body>
@@ -112,9 +113,22 @@ <h3>Frame object</h3>
112113
<a href="javascript:((frame.Undo()))">Undo()</a><br>
113114
<a href="javascript:((frame.ViewSource()))">ViewSource()</a><br>
114115

116+
<h3>Browser view as an image</h3>
117+
118+
Browser.GetImage() returns PaintBuffer, that object
119+
has method called GetString() that returns the buffer
120+
as a string that can be later passed to Python Imaging Library
121+
by calling PIL.Image.fromstring() and saved as a PNG (or
122+
other format) to a file. Test it:<br>
123+
<a href="javascript:python.SaveImage('!cefadvanced.png', 'PNG')">
124+
python.SaveImage('!cefadvanced.png', 'PNG')</a><br>
125+
(you need to have installed the PIL extension).
126+
115127
<h3>Test unicode string</h3>
116128

117-
<a href="javascript:alert(python.GetUnicodeString())">python.GetUnicodeString()</a>
129+
<a href="javascript:alert(python.GetUnicodeString())">
130+
python.GetUnicodeString()</a><br>
131+
You should see a long dash in python 2.7.
118132

119133
<h3>Test creation of second browser</h3>
120134

@@ -146,10 +160,6 @@ <h3>Frame.ExecuteJavascript()</h3>
146160
<textarea id=jscode>alert('test me')</textarea><br>
147161
<a href="javascript:python.ExecuteJavascript(jscode.value)">python.ExecuteJavascript(jscode.value)</a> - execute javascript from the textarea above.
148162

149-
<h3>Frame.LoadUrl(url)</h3>
150-
151-
<a href="javascript:python.LoadUrl()">python.LoadUrl()</a> - will load "cefsimple.html" into main frame of this window.
152-
153163
<h3>Frames</h3>
154164

155165
<iframe src="cefsimple.html" name=simple></iframe>
@@ -183,29 +193,23 @@ <h4>Passing arguments</h4>
183193
Call __browser.GetMainFrame().GetProperty("PyConfig"): <a href="javascript:python.PrintPyConfig()">python.PrintPyConfig()</a><br>
184194
Try setting PyConfig during runtime using __browser.GetMainFrame().SetProperty(): <a href="javascript:python.ChangePyConfig()">python.ChangePyConfig()</a> (then call python.PrintPyConfig())
185195

186-
<h4>Infinite recursion</h4>
187-
Test infinite recursion: <a href="javascript:python.Test1(window)">python.Test1(window)</a> - you will see a python exception in console (also in error.log), data structures can have maximum 8 levels of nesting.
188-
189196
<h3>Javasript callbacks</h3>
190197

191198
<script>
192199
function MyJSCallback(arg1, arg2, arg3, arg4)
193200
{
194201
alert("MyJSCallback() called\narg1="+JSON.stringify(arg1)+"\narg2="+JSON.stringify(arg2)+"\narg3="+JSON.stringify(arg3)+"\narg4="+JSON.stringify(arg4))
195202
}
196-
function MyJSCallback2()
197-
{
198-
throw new Error("asd")
199-
}
200203
</script>
201204

202-
<a href="javascript:python.TestJavascriptCallback(MyJSCallback)">python.TestJavascriptCallback(MyJSCallback)</a> - MyJSCallback alerts arguments
203-
<br>
204-
<a href="javascript:python.TestJavascriptCallback(MyJSCallback2)">python.TestJavascriptCallback(MyJSCallback2)</a> - MyJSCallback2 throws new Error("asd")
205-
205+
<a href="javascript:python.TestJavascriptCallback(MyJSCallback)">
206+
python.TestJavascriptCallback(MyJSCallback)</a><br>
207+
MyJSCallback alerts arguments.
206208

207209
<h3>Python callbacks</h3>
208210

211+
<p>See the output in the console.</p>
212+
209213
<script>
210214
function JSCallbackForPythonCallback(pycallback)
211215
{
@@ -216,13 +220,36 @@ <h3>Python callbacks</h3>
216220
<a href="javascript:python.TestPythonCallbackThroughReturn()('some')">python.TestPythonCallbackThroughReturn()('some')</a><br>
217221
<a href="javascript:python.TestPythonCallbackThroughJavascriptCallback(JSCallbackForPythonCallback)">python.TestPythonCallbackThroughJavascriptCallback(JSCallbackForPythonCallback)</a>
218222

219-
<h3>Catching javascript errors programmatically</h3>
223+
<h3>Errors</h3>
220224

221225
<p>Typically when you browse a webpage your javascript errors appear in javascript console in developer tools (in cefadvanced.py there is a binding to F12 key for developer tools).</p>
222226

223-
<h3>Test javascript error, OnUncaughtException() callback will catch it</h3>
227+
<h4>Global exception handler</h4>
228+
229+
<p>You can catch javascript errors programmatically by
230+
using JavascriptContextHandler and the OnUncaughtException callback,
231+
test it:<br>
232+
<a href="javascript:DoSomeError()">
233+
DoSomeError()</a>
234+
</p>
235+
236+
<h4>Test error when calling javascript callback from python</h4>
237+
238+
<script>
239+
function JsCallbackThrowingError()
240+
{
241+
throw new Error("some error message")
242+
}
243+
</script>
244+
<a href="javascript:python.TestJavascriptCallback(JsCallbackThrowingError)">
245+
python.TestJavascriptCallback(JsCallbackThrowingError)</a><br>
246+
JsCallbackThrowingError throws new Error().
247+
248+
<h4>Infinite recursion</h4>
224249

225-
<p>Test javascript error: <a href="javascript:Undefined()">Undefined()</a></p>
250+
<a href="javascript:python.Test1(window)">python.Test1(window)</a><br>
251+
You should see a python exception in the console (also in error.log),
252+
data structures can have maximum 8 levels of nesting.
226253

227254
<h3>Moving and resizing window</h3>
228255

‎cefpython/cef1/windows/binaries/cefadvanced.py‎

Lines changed: 16 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -269,6 +269,22 @@ def OnTitleChange(self, browser, title):
269269
class Python:
270270
browser = None
271271

272+
def SaveImage(self, outfile, format):
273+
outfile = cefpython.GetRealPath(outfile)
274+
try:
275+
from PIL import Image
276+
except:
277+
print("PIL library not available, can't save image")
278+
return
279+
(width, height) = self.browser.GetSize(cefpython.PET_VIEW)
280+
buffer = self.browser.GetImage(cefpython.PET_VIEW, width, height)
281+
image = Image.fromstring(
282+
"RGBA", (width,height),
283+
buffer.GetString(mode="rgba", origin="top-left"),
284+
"raw", "RGBA", 0, 1)
285+
image.save(outfile, format)
286+
os.system(outfile)
287+
272288
def ExecuteJavascript(self, jsCode):
273289
self.browser.GetMainFrame().ExecuteJavascript(jsCode)
274290

‎cefpython/cef1/windows/binaries/cefwxpanel.py‎

Lines changed: 11 additions & 4 deletions
Original file line numberDiff line numberDiff line change
@@ -27,7 +27,7 @@ class CEFWindow(wx.Window):
2727
"""Standalone CEF component. The class provides facilites for interacting with wx message loop"""
2828
def __init__(self, parent, url="", size=(-1, -1), *args, **kwargs):
2929
wx.Window.__init__(self, parent, id=wx.ID_ANY, size=size, *args, **kwargs)
30-
30+
self.url = url
3131
windowInfo = cefpython.WindowInfo()
3232
windowInfo.SetAsChild(self.GetHandle())
3333
self.browser = cefpython.CreateBrowserSync(windowInfo, browserSettings={}, navigateURL=url)
@@ -63,12 +63,19 @@ def OnSetFocus(self, event):
6363
def OnSize(self, event):
6464
cefpython.WindowUtils.OnSize(self.GetHandle(), 0, 0, 0)
6565

66+
#def Shutdown(self):
67+
#print "CLOSING PAGE %s, YA MAN" % self.url
68+
#self.timer.Stop()
69+
#self.browser.CloseBrowser()
6670
#-------------------------------------------------------------------------------
6771

68-
def initCEF():
69-
"""Initializes CEF, We should do it before initializing wx"""
72+
def initCEF(settings=None):
73+
"""Initializes CEF, We should do it before initializing wx
74+
If no settings passed a default is used
75+
"""
7076
sys.excepthook = cefpython.ExceptHook
71-
settings = {"log_severity": cefpython.LOGSEVERITY_VERBOSE, "release_dcheck_enabled": True}
77+
if not settings:
78+
settings = {"log_severity": cefpython.LOGSEVERITY_VERBOSE, "release_dcheck_enabled": True}
7279
cefpython.Initialize(settings)
7380

7481
def shutdownCEF():

‎cefpython/cef1/windows/binaries/cefwxpanel_sample2.py‎

Lines changed: 13 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -2,15 +2,20 @@
22
# __author__ = "Greg Kacy <grkacy@gmail.com>"
33

44
import wx
5+
import wx.lib.agw.flatnotebook as fnb
56

67
from cefwxpanel import initCEF, shutdownCEF, CEFWindow
78

89
ROOT_NAME = "My Locations"
910

1011
URLS = ["cefsimple.html",
12+
"http://google.com",
13+
"http://maps.google.com",
14+
"http://youtube.com",
1115
"http://yahoo.com",
1216
"http://wikipedia.com",
13-
"http://maps.google.com"]
17+
"http://cyaninc.com",
18+
]
1419

1520
class MainFrame(wx.Frame):
1621
def __init__(self):
@@ -26,16 +31,17 @@ def initComponents(self):
2631
self.tree.AppendItem(self.root, url)
2732
self.tree.Expand(self.root)
2833

29-
self.tabs = wx.Notebook(self, id=-1, style=wx.BK_DEFAULT)
34+
self.tabs = fnb.FlatNotebook(self, wx.ID_ANY, agwStyle=fnb.FNB_NODRAG|fnb.FNB_X_ON_TAB)
3035

3136
def layoutComponents(self):
32-
sizer = wx.BoxSizer()
37+
sizer = wx.BoxSizer(wx.HORIZONTAL)
3338
sizer.Add(self.tree, 0, wx.EXPAND)
3439
sizer.Add(self.tabs, 1, wx.EXPAND)
3540
self.SetSizer(sizer)
3641

3742
def initEventHandlers(self):
3843
self.Bind(wx.EVT_TREE_SEL_CHANGED, self.OnSelChanged, self.tree)
44+
self.Bind(fnb.EVT_FLATNOTEBOOK_PAGE_CLOSING, self.OnPageClosing)
3945
self.Bind(wx.EVT_CLOSE, self.OnClose)
4046

4147
def OnSelChanged(self, event):
@@ -44,7 +50,11 @@ def OnSelChanged(self, event):
4450
if url and url != ROOT_NAME:
4551
cefPanel = CEFWindow(self.tabs, url=str(url))
4652
self.tabs.AddPage(cefPanel, url)
53+
self.tabs.SetSelection(self.tabs.GetPageCount()-1)
54+
event.Skip()
4755

56+
def OnPageClosing(self, event):
57+
print "One could place some extra closing stuff here"
4858
event.Skip()
4959

5060
def OnClose(self, event):

‎cefpython/cef1/windows/binaries/panda3d_.py‎

Lines changed: 5 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -55,8 +55,11 @@ def __init__(self):
5555
windowHandle = base.win.getWindowHandle().getIntHandle()
5656

5757
self.texture = Texture()
58-
self.texture.setup2dTexture(400, 300, Texture.CMOff,
59-
Texture.FLuminanceAlpha)
58+
self.texture.setXSize(400)
59+
self.texture.setYSize(300)
60+
self.texture.setCompression(Texture.CMOff)
61+
self.texture.setComponentType(Texture.TUnsignedByte)
62+
self.texture.setFormat(Texture.FRgba4)
6063

6164
cardMaker = CardMaker("browser2d")
6265
cardMaker.setFrame(-0.75,.75,-0.75,0.75)

‎cefpython/var/panda3d.png‎

74.7 KB
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