Move margin processing code to the browser process.

printing/page_setup.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "printing/page_setup.h"
 
 #include <algorithm>
 
 #include "base/logging.h"
 
@@ skipping 19 matching lines @@
 
 bool PageMargins::Equals(const PageMargins& rhs) const {
   return header == rhs.header &&
       footer == rhs.footer &&
       left == rhs.left &&
       top == rhs.top &&
       right == rhs.right &&
       bottom == rhs.bottom;
 }
 
-PageSetup::PageSetup() : text_height_(0) {
+PageSetup::PageSetup() {
+  Clear();
 }
 
 PageSetup::~PageSetup() {}
 
 void PageSetup::Clear() {
   physical_size_.SetSize(0, 0);
   printable_area_.SetRect(0, 0, 0, 0);
   overlay_area_.SetRect(0, 0, 0, 0);
   content_area_.SetRect(0, 0, 0, 0);
   effective_margins_.Clear();
@@ skipping 17 matching lines @@
   // I've seen this assert triggers on Canon GP160PF PCL 5e and HP LaserJet 5.
   // Since we don't know the dpi here, just disable the check.
   // DCHECK_LE(printable_area.bottom(), physical_size.height());
   DCHECK_GE(printable_area.x(), 0);
   DCHECK_GE(printable_area.y(), 0);
   DCHECK_GE(text_height, 0);
   physical_size_ = physical_size;
   printable_area_ = printable_area;
   text_height_ = text_height;
 
+  CalculateSizesWithinRect(printable_area_);
+}
+
+void PageSetup::SetRequestedMargins(const PageMargins& requested_margins) {
+  requested_margins_ = requested_margins;
+  if (printable_area_.width() && printable_area_.height())
+    CalculateSizesWithinRect(printable_area_);
+}
+
+void PageSetup::ForceRequestedMargins(const PageMargins& requested_margins) {
+  requested_margins_ = requested_margins;
+  if (physical_size_.width() && physical_size_.height())
+    CalculateSizesWithinRect(gfx::Rect(physical_size_));
+}
+
+void PageSetup::FlipOrientation() {
+  if (physical_size_.width() && physical_size_.height()) {
+    gfx::Size new_size(physical_size_.height(), physical_size_.width());
+    int new_y = physical_size_.width() -
+                (printable_area_.width() + printable_area_.x());
+    gfx::Rect new_printable_area(printable_area_.y(),
+                                 new_y,
+                                 printable_area_.height(),
+                                 printable_area_.width());
+    Init(new_size, new_printable_area, text_height_);
+  }
+}
+
+void PageSetup::CalculateSizesWithinRect(const gfx::Rect& bounds) {
   // Calculate the effective margins. The tricky part.
   effective_margins_.header = std::max(requested_margins_.header,
-                                       printable_area_.y());
+                                       bounds.y());
   effective_margins_.footer = std::max(requested_margins_.footer,
-                                       physical_size.height() -
-                                           printable_area_.bottom());
+                                       physical_size_.height() -
+                                           bounds.bottom());
   effective_margins_.left = std::max(requested_margins_.left,
-                                     printable_area_.x());
+                                     bounds.x());
   effective_margins_.top = std::max(std::max(requested_margins_.top,
-                                             printable_area_.y()),
-                                    effective_margins_.header + text_height);
+                                             bounds.y()),
+                                    effective_margins_.header + text_height_);
   effective_margins_.right = std::max(requested_margins_.right,
-                                      physical_size.width() -
-                                          printable_area_.right());
-  effective_margins_.bottom = std::max(std::max(requested_margins_.bottom,
-                                                physical_size.height() -
-                                                    printable_area_.bottom()),
-                                       effective_margins_.footer + text_height);
+                                      physical_size_.width() -
+                                          bounds.right());
+  effective_margins_.bottom =
+      std::max(std::max(requested_margins_.bottom,
+                        physical_size_.height() - bounds.bottom()),
+               effective_margins_.footer + text_height_);
 
   // Calculate the overlay area. If the margins are excessive, the overlay_area
   // size will be (0, 0).
   overlay_area_.set_x(effective_margins_.left);
   overlay_area_.set_y(effective_margins_.header);
   overlay_area_.set_width(std::max(0,
-                                   physical_size.width() -
+                                   physical_size_.width() -
                                        effective_margins_.right -
                                        overlay_area_.x()));
   overlay_area_.set_height(std::max(0,
-                                    physical_size.height() -
+                                    physical_size_.height() -
                                         effective_margins_.footer -
                                         overlay_area_.y()));
 
   // Calculate the content area. If the margins are excessive, the content_area
   // size will be (0, 0).
   content_area_.set_x(effective_margins_.left);
   content_area_.set_y(effective_margins_.top);
   content_area_.set_width(std::max(0,
-                                   physical_size.width() -
+                                   physical_size_.width() -
                                        effective_margins_.right -
                                        content_area_.x()));
   content_area_.set_height(std::max(0,
-                                    physical_size.height() -
+                                    physical_size_.height() -
                                         effective_margins_.bottom -
                                         content_area_.y()));
 }
 
-void PageSetup::SetRequestedMargins(const PageMargins& requested_margins) {
-  requested_margins_ = requested_margins;
-  if (physical_size_.width() && physical_size_.height())
-    Init(physical_size_, printable_area_, text_height_);
-}
-
-void PageSetup::FlipOrientation() {
-  if (physical_size_.width() && physical_size_.height()) {
-    gfx::Size new_size(physical_size_.height(), physical_size_.width());
-    int new_y = physical_size_.width() -
-                (printable_area_.width() + printable_area_.x());
-    gfx::Rect new_printable_area(printable_area_.y(),
-                                 new_y,
-                                 printable_area_.height(),
-                                 printable_area_.width());
-    Init(new_size, new_printable_area, text_height_);
-  }
-}
-
 }  // namespace printing