129 lines
4.7 KiB
C++
129 lines
4.7 KiB
C++
// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "precompiled_libcef.h"
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#include "page_setup.h"
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#include "base/logging.h"
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namespace printing {
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PageMargins::PageMargins()
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: header(0),
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footer(0),
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left(0),
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right(0),
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top(0),
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bottom(0) {
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}
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void PageMargins::Clear() {
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header = 0;
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footer = 0;
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left = 0;
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right = 0;
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top = 0;
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bottom = 0;
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}
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bool PageMargins::Equals(const PageMargins& rhs) const {
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return header == rhs.header &&
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footer == rhs.footer &&
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left == rhs.left &&
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top == rhs.top &&
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right == rhs.right &&
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bottom == rhs.bottom;
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}
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PageSetup::PageSetup() : text_height_(0) {
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}
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void PageSetup::Clear() {
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physical_size_.SetSize(0, 0);
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printable_area_.SetRect(0, 0, 0, 0);
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overlay_area_.SetRect(0, 0, 0, 0);
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content_area_.SetRect(0, 0, 0, 0);
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effective_margins_.Clear();
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text_height_ = 0;
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}
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bool PageSetup::Equals(const PageSetup& rhs) const {
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return physical_size_ == rhs.physical_size_ &&
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printable_area_ == rhs.printable_area_ &&
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overlay_area_ == rhs.overlay_area_ &&
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content_area_ == rhs.content_area_ &&
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effective_margins_.Equals(rhs.effective_margins_) &&
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requested_margins_.Equals(rhs.requested_margins_) &&
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text_height_ == rhs.text_height_;
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}
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void PageSetup::Init(const gfx::Size& physical_size,
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const gfx::Rect& printable_area,
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int text_height) {
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DCHECK_LE(printable_area.right(), physical_size.width());
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// I've seen this assert triggers on Canon GP160PF PCL 5e and HP LaserJet 5.
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// Since we don't know the dpi here, just disable the check.
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// DCHECK_LE(printable_area.bottom(), physical_size.height());
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DCHECK_GE(printable_area.x(), 0);
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DCHECK_GE(printable_area.y(), 0);
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DCHECK_GE(text_height, 0);
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physical_size_ = physical_size;
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printable_area_ = printable_area;
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text_height_ = text_height;
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// Calculate the effective margins. The tricky part.
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effective_margins_.header = std::max(requested_margins_.header,
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printable_area_.y());
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effective_margins_.footer = std::max(requested_margins_.footer,
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physical_size.height() -
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printable_area_.bottom());
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effective_margins_.left = std::max(requested_margins_.left,
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printable_area_.x());
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effective_margins_.top = std::max(std::max(requested_margins_.top,
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printable_area_.y()),
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effective_margins_.header + text_height);
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effective_margins_.right = std::max(requested_margins_.right,
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physical_size.width() -
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printable_area_.right());
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effective_margins_.bottom = std::max(std::max(requested_margins_.bottom,
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physical_size.height() -
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printable_area_.bottom()),
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effective_margins_.footer + text_height);
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// Calculate the overlay area. If the margins are excessive, the overlay_area
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// size will be (0, 0).
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overlay_area_.set_x(effective_margins_.left);
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overlay_area_.set_y(effective_margins_.header);
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overlay_area_.set_width(std::max(0,
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physical_size.width() -
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effective_margins_.right -
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overlay_area_.x()));
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overlay_area_.set_height(std::max(0,
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physical_size.height() -
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effective_margins_.footer -
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overlay_area_.y()));
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// Calculate the content area. If the margins are excessive, the content_area
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// size will be (0, 0).
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content_area_.set_x(effective_margins_.left);
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content_area_.set_y(effective_margins_.top);
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content_area_.set_width(std::max(0,
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physical_size.width() -
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effective_margins_.right -
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content_area_.x()));
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content_area_.set_height(std::max(0,
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physical_size.height() -
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effective_margins_.bottom -
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content_area_.y()));
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}
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void PageSetup::SetRequestedMargins(const PageMargins& requested_margins) {
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requested_margins_ = requested_margins;
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if (physical_size_.width() && physical_size_.height())
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Init(physical_size_, printable_area_, text_height_);
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}
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} // namespace printing
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