Paged display: Add support for full screen mode

src/calibre/ebooks/oeb/display/paged.coffee

@@ -66,6 +66,7 @@ class PagedDisplay
         this.in_paged_mode = false
         this.current_margin_side = 0
         this.is_full_screen_layout = false
+        this.max_col_width = -1
 
     set_geometry: (cols_per_screen=1, margin_top=20, margin_side=40, margin_bottom=20) ->
         this.margin_top = margin_top
@@ -108,6 +109,11 @@ class PagedDisplay
         # Minimum column width, for the cases when the window is too
         # narrow
         col_width = Math.max(100, ((ww - adjust)/n) - 2*sm)
+        if this.max_col_width > 0 and col_width > this.max_col_width
+            # Increase the side margin to ensure that col_width is no larger
+            # than max_col_width
+            sm += Math.ceil( (col_width - this.max_col_width) / 2.0 )
+            col_width = Math.max(100, ((ww - adjust)/n) - 2*sm)
         this.page_width = col_width + 2*sm
         this.screen_width = this.page_width * this.cols_per_screen
 
@@ -360,5 +366,4 @@ if window?
 
 # TODO:
 # Resizing of images
-# Full screen mode
 # Highlight on jump_to_anchor

src/calibre/gui2/viewer/documentview.py

@@ -234,21 +234,27 @@ class Document(QWebPage): # {{{
 
     def switch_to_fullscreen_mode(self):
         self.in_fullscreen_mode = True
-        self.javascript('''
+        if self.in_paged_mode:
-                var s = document.body.style;
+            self.javascript('paged_display.max_col_width = %d'%self.max_fs_width)
-                s.maxWidth = "%dpx";
+        else:
-                s.marginLeft = "auto";
+            self.javascript('''
-                s.marginRight = "auto";
+                    var s = document.body.style;
-            '''%self.max_fs_width)
+                    s.maxWidth = "%dpx";
+                    s.marginLeft = "auto";
+                    s.marginRight = "auto";
+                '''%self.max_fs_width)
 
     def switch_to_window_mode(self):
         self.in_fullscreen_mode = False
-        self.javascript('''
+        if self.in_paged_mode:
-                var s = document.body.style;
+            self.javascript('paged_display.max_col_width = %d'%-1)
-                s.maxWidth = "none";
+        else:
-                s.marginLeft = "%s";
+            self.javascript('''
-                s.marginRight = "%s";
+                    var s = document.body.style;
-            '''%(self.initial_left_margin, self.initial_right_margin))
+                    s.maxWidth = "none";
+                    s.marginLeft = "%s";
+                    s.marginRight = "%s";
+                '''%(self.initial_left_margin, self.initial_right_margin))
 
     @pyqtSignature("QString")
     def debug(self, msg):

src/calibre/gui2/viewer/main.py

@@ -477,6 +477,7 @@ class EbookViewer(MainWindow, Ui_EbookViewer):
             else:
                 self.view.document.switch_to_window_mode()
             self.view.document.page_position.restore()
+            self.scrolled(self.view.scroll_fraction)
 
     def goto(self, ref):
         if ref:
@@ -754,12 +755,12 @@ class EbookViewer(MainWindow, Ui_EbookViewer):
         # There hasn't been a resize event for some time
         # restore the current page position.
         self.resize_in_progress = False
-        self.view.document.after_resize()
         if self.window_mode_changed:
             # This resize is part of a window mode change, special case it
             self.handle_window_mode_toggle()
         else:
             self.view.document.page_position.restore()
+        self.view.document.after_resize()
 
     def close_progress_indicator(self):
         self.pi.stop()