cef/libcef/printing/print_settings.h

151 lines
4.8 KiB
C++

// Copyright (c) 2006-2008 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.
#ifndef _PRINTING_PRINT_SETTINGS_H
#define _PRINTING_PRINT_SETTINGS_H
#include "base/gfx/rect.h"
#include "printing/page_range.h"
#include "printing/page_setup.h"
typedef struct HDC__* HDC;
typedef struct _devicemodeW DEVMODE;
namespace printing {
// Parameters for a render request.
struct PrintParams {
// In pixels according to dpi_x and dpi_y.
gfx::Size printable_size;
// Specifies dots per inch.
double dpi;
// Minimum shrink factor. See PrintSettings::min_shrink for more information.
double min_shrink;
// Maximum shrink factor. See PrintSettings::max_shrink for more information.
double max_shrink;
// Desired apparent dpi on paper.
int desired_dpi;
// Cookie for the document to ensure correctness.
int document_cookie;
// Indicates if the user only wants to print the current selection.
bool selection_only;
// Indicates if the user wants to print to file.
bool to_file;
// Warning: do not compare document_cookie.
bool Equals(const PrintParams& rhs) const {
return printable_size == rhs.printable_size &&
dpi == rhs.dpi &&
min_shrink == rhs.min_shrink &&
max_shrink == rhs.max_shrink &&
desired_dpi == rhs.desired_dpi &&
selection_only == rhs.selection_only &&
to_file == rhs.to_file;
}
};
// OS-independent print settings.
class PrintSettings {
public:
PrintSettings();
// Reinitialize the settings to the default values.
void Clear();
#ifdef WIN32
// Reads the settings from the selected device context. Calculates derived
// values like printable_area_.
void Init(HDC hdc,
const DEVMODE& dev_mode,
const PageRanges& new_ranges,
const std::wstring& new_device_name,
bool selection_only,
bool to_file);
#endif
// Set printer printable area in pixels.
void SetPrinterPrintableArea(gfx::Size const& physical_size_pixels,
gfx::Rect const& printable_area_pixels);
// Initializes the print parameters that needs to be sent to the renderer
// process.
void RenderParams(PrintParams* params) const;
// Equality operator.
// NOTE: printer_name is NOT tested for equality since it doesn't affect the
// output.
bool Equals(const PrintSettings& rhs) const;
const std::wstring& printer_name() const { return printer_name_; }
void set_device_name(const std::wstring& device_name) {
device_name_ = device_name;
}
const std::wstring& device_name() const { return device_name_; }
int dpi() const { return dpi_; }
const PageSetup& page_setup_pixels() const { return page_setup_pixels_; }
// Multi-page printing. Each PageRange describes a from-to page combination.
// This permits printing selected pages only.
PageRanges ranges;
// By imaging to a width a little wider than the available pixels, thin pages
// will be scaled down a little, matching the way they print in IE and Camino.
// This lets them use fewer sheets than they would otherwise, which is
// presumably why other browsers do this. Wide pages will be scaled down more
// than this.
double min_shrink;
// This number determines how small we are willing to reduce the page content
// in order to accommodate the widest line. If the page would have to be
// reduced smaller to make the widest line fit, we just clip instead (this
// behavior matches MacIE and Mozilla, at least)
double max_shrink;
// Desired visible dots per inch rendering for output. Printing should be
// scaled to ScreenDpi/dpix*desired_dpi.
int desired_dpi;
// Indicates if the user only wants to print the current selection.
bool selection_only;
// Indicates if the user wants to print to file.
bool to_file;
// Cookie generator. It is used to initialize PrintedDocument with its
// associated PrintSettings, to be sure that each generated PrintedPage is
// correctly associated with its corresponding PrintedDocument.
static int NewCookie();
private:
//////////////////////////////////////////////////////////////////////////////
// Settings that can't be changed without side-effects.
// Printer name as shown to the user.
std::wstring printer_name_;
// Printer device name as opened by the OS.
std::wstring device_name_;
// Page setup in pixel units, dpi adjusted.
PageSetup page_setup_pixels_;
// Printer's device effective dots per inch in both axis.
int dpi_;
// Is the orientation landscape or portrait.
bool landscape_;
};
} // namespace printing
#endif // _PRINTING_PRINT_SETTINGS_H