haiku/headers/libs/print/libprint/Preview.h

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/*
* Copyright 2002-2008, Haiku. All rights reserved.
* Distributed under the terms of the MIT License.
*
* Authors:
* Michael Pfeiffer
* Hartmut Reh
* julun <host.haiku@gmx.de>
*/
#include "BlockingWindow.h"
#include "JobData.h"
#include "PrintJobReader.h"
#include <View.h>
class BButton;
class BFile;
class BMessage;
class BPicture;
class BScrollView;
class BStringView;
class BTextControl;
// #pragma mark - PreviewPage
class PreviewPage {
public:
PreviewPage(int32 page, PrintJobPage* pjp);
~PreviewPage();
void Draw(BView* view, const BRect& printRect);
status_t InitCheck() const;
int32 Page() const { return fPage; }
private:
int32 fPage;
status_t fStatus;
int32 fNumberOfPictures;
BRect* fRects;
BPoint* fPoints;
BPicture* fPictures;
};
// #pragma mark - PreviewView
class PreviewView : public BView {
public:
PreviewView(BFile* jobFile, BRect rect);
virtual ~PreviewView();
virtual void Show();
virtual void Hide();
virtual void Draw(BRect r);
virtual void FrameResized(float width, float height);
virtual void MouseDown(BPoint point);
virtual void MouseMoved(BPoint point, uint32 transit,
const BMessage* message);
virtual void MouseUp(BPoint point);
virtual void KeyDown(const char* bytes, int32 numBytes);
void ShowFirstPage();
void ShowPrevPage();
void ShowNextPage();
void ShowLastPage();
bool ShowsFirstPage() const;
bool ShowsLastPage() const;
void ShowFindPage(int32 page);
void ZoomIn();
bool CanZoomIn() const;
void ZoomOut();
bool CanZoomOut() const;
void FixScrollbars();
BRect ViewRect() const;
status_t InitCheck() const;
int32 NumberOfPages() const;
int32 CurrentPage() const { return fPage + 1; }
private:
BRect _PaperRect() const;
float _ZoomFactor() const;
BRect _PrintableRect() const;
void _LoadPage(int32 page);
bool _IsPageValid() const;
bool _IsPageLoaded(int32 page) const;
BRect _ContentRect() const;
void _DrawPageFrame(BRect rect);
void _DrawPage(BRect updateRect);
void _DrawMarginFrame(BRect rect);
int32 _GetPageNumber(int32 index) const;
private:
int32 fPage;
int32 fZoom;
PrintJobReader fReader;
bool fReverse;
BRect fPaperRect;
BRect fPrintableRect;
bool fTracking;
bool fInsideView;
BPoint fScrollStart;
int32 fNumberOfPages;
int32 fNumberOfPagesPerPage;
PreviewPage* fCachedPage;
JobData::Orientation fOrientation;
JobData::PageSelection fPageSelection;
};
// #pragma mark - PreviewWindow
class PreviewWindow : public BlockingWindow {
public:
PreviewWindow(BFile* jobFile,
bool showOkAndCancelButtons = false);
virtual void MessageReceived(BMessage* m);
status_t Go();
status_t InitCheck() const { return fPreview->InitCheck(); }
private:
void _ResizeToPage();
void _UpdateControls();
private:
BButton* fFirst;
BButton* fNext;
BButton* fPrev;
BButton* fLast;
BButton* fZoomIn;
BButton* fZoomOut;
BTextControl* fPageNumber;
BStringView* fPageText;
PreviewView* fPreview;
BScrollView* fPreviewScroller;
float fButtonBarHeight;
enum {
MSG_FIRST_PAGE = 'pwfp',
MSG_NEXT_PAGE = 'pwnp',
MSG_PREV_PAGE = 'pwpp',
MSG_LAST_PAGE = 'pwlp',
MSG_FIND_PAGE = 'pwsp',
MSG_ZOOM_IN = 'pwzi',
MSG_ZOOM_OUT = 'pwzo',
MSG_PRINT_JOB = 'pwpj',
MSG_CANCEL_JOB = 'pwcj',
};
};