138 lines
4.8 KiB
C++
138 lines
4.8 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 "print_settings.h"
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#include "base/atomic_sequence_num.h"
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#include "base/logging.h"
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#include "printing/units.h"
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namespace printing {
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// Global SequenceNumber used for generating unique cookie values.
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static base::AtomicSequenceNumber cookie_seq(base::LINKER_INITIALIZED);
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PrintSettings::PrintSettings()
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: min_shrink(1.25),
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max_shrink(2.0),
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desired_dpi(72),
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selection_only(false),
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to_file(false),
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dpi_(0),
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landscape_(false) {
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}
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void PrintSettings::Clear() {
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ranges.clear();
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min_shrink = 1.25;
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max_shrink = 2.;
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desired_dpi = 72;
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selection_only = false;
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to_file = false;
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printer_name_.clear();
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device_name_.clear();
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page_setup_pixels_.Clear();
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dpi_ = 0;
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landscape_ = false;
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}
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#ifdef WIN32
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void PrintSettings::Init(HDC hdc,
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const DEVMODE& dev_mode,
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const PageRanges& new_ranges,
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const std::wstring& new_device_name,
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bool print_selection_only,
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bool print_to_file) {
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DCHECK(hdc);
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printer_name_ = dev_mode.dmDeviceName;
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device_name_ = new_device_name;
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ranges = new_ranges;
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landscape_ = dev_mode.dmOrientation == DMORIENT_LANDSCAPE;
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selection_only = print_selection_only;
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to_file = print_to_file;
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dpi_ = GetDeviceCaps(hdc, LOGPIXELSX);
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// No printer device is known to advertise different dpi in X and Y axis; even
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// the fax device using the 200x100 dpi setting. It's ought to break so many
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// applications that it's not even needed to care about. WebKit doesn't
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// support different dpi settings in X and Y axis.
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DCHECK_EQ(dpi_, GetDeviceCaps(hdc, LOGPIXELSY));
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DCHECK_EQ(GetDeviceCaps(hdc, SCALINGFACTORX), 0);
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DCHECK_EQ(GetDeviceCaps(hdc, SCALINGFACTORY), 0);
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// Initialize page_setup_pixels_.
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gfx::Size physical_size_pixels(GetDeviceCaps(hdc, PHYSICALWIDTH),
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GetDeviceCaps(hdc, PHYSICALHEIGHT));
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gfx::Rect printable_area_pixels(GetDeviceCaps(hdc, PHYSICALOFFSETX),
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GetDeviceCaps(hdc, PHYSICALOFFSETY),
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GetDeviceCaps(hdc, HORZRES),
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GetDeviceCaps(hdc, VERTRES));
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SetPrinterPrintableArea(physical_size_pixels, printable_area_pixels);
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}
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#endif
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void PrintSettings::SetPrinterPrintableArea(
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gfx::Size const& physical_size_pixels,
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gfx::Rect const& printable_area_pixels) {
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int margin_printer_units = ConvertUnit(500, kHundrethsMMPerInch, dpi_);
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// Start by setting the user configuration
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// Hard-code text_height = 0.5cm = ~1/5 of inch
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page_setup_pixels_.Init(physical_size_pixels,
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printable_area_pixels,
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margin_printer_units);
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// Now apply user configured settings.
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PageMargins margins;
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margins.header = margin_printer_units;
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margins.footer = margin_printer_units;
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margins.left = margin_printer_units;
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margins.top = margin_printer_units;
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margins.right = margin_printer_units;
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margins.bottom = margin_printer_units;
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page_setup_pixels_.SetRequestedMargins(margins);
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}
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void PrintSettings::RenderParams(PrintParams* params) const {
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DCHECK(params);
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params->printable_size.SetSize(page_setup_pixels_.content_area().width(),
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page_setup_pixels_.content_area().height());
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params->dpi = dpi_;
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// Currently hardcoded at 1.25. See PrintSettings' constructor.
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params->min_shrink = min_shrink;
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// Currently hardcoded at 2.0. See PrintSettings' constructor.
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params->max_shrink = max_shrink;
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// Currently hardcoded at 72dpi. See PrintSettings' constructor.
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params->desired_dpi = desired_dpi;
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// Always use an invalid cookie.
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params->document_cookie = 0;
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params->selection_only = selection_only;
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params->to_file = to_file;
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}
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bool PrintSettings::Equals(const PrintSettings& rhs) const {
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// Do not test the display device name (printer_name_) for equality since it
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// may sometimes be chopped off at 30 chars. As long as device_name is the
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// same, that's fine.
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return ranges == rhs.ranges &&
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min_shrink == rhs.min_shrink &&
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max_shrink == rhs.max_shrink &&
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desired_dpi == rhs.desired_dpi &&
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device_name_ == rhs.device_name_ &&
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page_setup_pixels_.Equals(rhs.page_setup_pixels_) &&
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dpi_ == rhs.dpi_ &&
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landscape_ == rhs.landscape_;
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}
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int PrintSettings::NewCookie() {
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// A cookie of 0 is used to mark a document as unassigned, count from 1.
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return cookie_seq.GetNext() + 1;
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}
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} // namespace printing
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