[gnue] r8549 - trunk/gnue-forms/src/uidrivers/wx26/widgets

[reinhard]

Author: reinhard
Date: 2006-08-03 10:49:49 -0500 (Thu, 03 Aug 2006)
New Revision: 8549

Modified:
   trunk/gnue-forms/src/uidrivers/wx26/widgets/form.py
Log:
Implemented screen dump function for wx26.


Modified: trunk/gnue-forms/src/uidrivers/wx26/widgets/form.py
===================================================================
--- trunk/gnue-forms/src/uidrivers/wx26/widgets/form.py 2006-08-02 09:52:46 UTC 
(rev 8548)
+++ trunk/gnue-forms/src/uidrivers/wx26/widgets/form.py 2006-08-03 15:49:49 UTC 
(rev 8549)
@@ -24,10 +24,12 @@
 Implementation of the UI layer for the <form> and <dialog> tag.
 """
 
+import time
+import os.path
 import wx
-import os.path
 
 from gnue.common.apps import GConfig
+from gnue.forms import VERSION
 from gnue.forms.uidrivers.wx26.MenuBar import MenuBar
 from gnue.forms.uidrivers.wx26.ToolBar import ToolBar
 from gnue.forms.uidrivers.wx26.widgets._base import UIHelper
@@ -349,7 +351,161 @@
         self.show_page(page.page_index)
 
 
+    # -------------------------------------------------------------------------
+    # Print form screenshot
+    # -------------------------------------------------------------------------
+
+    def _ui_printout_(self, title, subtitle, user):
+
+        # Store the content of the form in a bitmap DC
+        window_dc = wx.ClientDC(self.main_window)
+        w, h = self.main_window.GetClientSizeTuple()
+        bmp = wx.EmptyBitmap(w, h)
+        form_dc = wx.MemoryDC()
+        form_dc.SelectObject(bmp)
+        form_dc.Blit(0,0, w, h, window_dc, 0, 0)
+        image = wx.ImageFromBitmap(bmp)
+
+        wx.Printer().Print(self.main_window,
+                _Printout(title, subtitle, user, image))
+
+
 # =============================================================================
+# Helper class for screen dump printing
+# =============================================================================
+
+class _Printout(wx.Printout):
+
+    # -------------------------------------------------------------------------
+    # Constructor
+    # -------------------------------------------------------------------------
+
+    def __init__(self, title, subtitle, login, image):
+        self.__title = title
+        self.__subtitle = subtitle or ''
+        self.__login = login
+        self.__image = image
+        wx.Printout.__init__(self, title)
+
+
+    # -------------------------------------------------------------------------
+    # Return info about number of pages in the document (always 1 here)
+    # -------------------------------------------------------------------------
+
+    def GetPageInfo(self):
+
+        return (1, 1, 1, 1)
+
+
+    # -------------------------------------------------------------------------
+    # Print the page
+    # -------------------------------------------------------------------------
+
+    def OnPrintPage(self, page):
+
+        # Prepare DC to paint on
+        dc = self.GetDC()
+        dc.SetFont(wx.NORMAL_FONT)
+        dc.SetPen(wx.BLACK_PEN)
+        dc.SetBrush(wx.TRANSPARENT_BRUSH)
+
+        # Scale from screen to printer
+        screen_ppi_x, screen_ppi_y = self.GetPPIScreen()
+        printer_ppi_x, printer_ppi_y = self.GetPPIPrinter()
+        scale_x = float(printer_ppi_x) / screen_ppi_x
+        scale_y = float(printer_ppi_y) / screen_ppi_y
+
+        # Calculate page margins
+        page_width, page_height = self.GetPageSizePixels()
+        page_margin_left = page_margin_right  = int(printer_ppi_x*.75+.5)
+        page_margin_top  = page_margin_bottom = int(printer_ppi_y*.75+.5)
+        page_left   = page_margin_left
+        page_top    = page_margin_top
+        page_right  = page_width - page_margin_right
+        page_bottom = page_height - page_margin_bottom
+
+        # Page header, left
+        y = self.draw_text(dc, page_left, page_top, self.__title)
+        y = self.draw_text(dc, page_left, y, self.__subtitle)
+
+        # Page header, right
+        timestamp = time.strftime(
+                "%Y-%m-%d %H:%M:%S",time.localtime(time.time()))
+        y = self.draw_text(dc, page_right, page_top, timestamp,
+                align_right=True)
+        y = self.draw_text(dc, page_right, y, u_('Login: ') + self.__login,
+                align_right=True)
+
+        # Page header, line
+        dc.DrawLine(page_left, y, page_right, y)
+        canvas_top = y + int(printer_ppi_y * 0.25 + 0.5)
+
+        # Page footer, left
+        y = self.draw_text(dc, page_left, page_bottom,
+                'GNUe Forms %s' % VERSION, align_bottom=True)
+
+        # Page footer, line
+        dc.DrawLine(page_left, y, page_right, y)
+        canvas_bottom = y - int(printer_ppi_y * 0.25 + 0.5)
+
+        # Space where we can paint the screenshot
+        canvas_w = page_right - page_left
+        canvas_h = canvas_bottom - canvas_top
+
+        # If necessary, adjust scale factor to fit on page
+        w = self.__image.GetWidth()
+        h = self.__image.GetHeight()
+        if w * scale_x > canvas_w:
+            scale_y = scale_y / (w * scale_x / canvas_w)
+            scale_x = canvas_w / w
+        if h * scale_y > canvas_h:
+            scale_x = scale_x / (h * scale_y / canvas_h)
+            scale_y = canvas_h / h
+
+        # and now, scale by factor
+        w = int (w * scale_x + 0.5)
+        h = int (h * scale_y + 0.5)
+
+        # the actual screenshot
+        dc.DrawBitmap(
+                wx.BitmapFromImage(self.__image.Scale(w, h)),
+                int((canvas_w - w) / 2) + page_left,
+                int((canvas_h - h) / 2) + canvas_top)
+
+        # border
+        dc.DrawRectangle(
+                int((canvas_w - w) / 2) + page_left, 
+                int((canvas_h - h) / 2) + canvas_top,
+                w, h)
+
+
+    # -------------------------------------------------------------------------
+    # Draw text and calculate new y position
+    # -------------------------------------------------------------------------
+
+    def draw_text(self, dc, x, y, text, align_right=False, align_bottom=False):
+
+        w, h = dc.GetTextExtent(text)
+
+        _x = x
+        _y = y
+
+        if align_right:
+            _x -= w
+        if align_bottom:
+            _y -= h
+
+        dc.DrawText(text, _x, _y)
+
+        if align_bottom:
+            new_y = y - h * 1.3
+        else:
+            new_y = y + h * 1.3
+
+        return new_y
+
+
+# =============================================================================
 # Widget configuration
 # =============================================================================