#endif
#ifndef WX_PRECOMP
-#include "wx/wx.h"
+ #include "wx/wx.h"
#endif
#include "wx/image.h"
wxBitmap my_horse_pcx;
wxBitmap my_horse_pnm;
wxBitmap my_horse_tiff;
+ wxBitmap my_horse_tga;
wxBitmap my_horse_xpm;
wxBitmap my_horse_ico32;
wxBitmap my_horse_ico16;
wxBitmap my_toucan_flipped_horiz;
wxBitmap my_toucan_flipped_vert;
wxBitmap my_toucan_flipped_both;
+ wxBitmap my_toucan_grey;
wxBitmap my_toucan_head;
+ wxBitmap my_toucan_scaled_normal;
+ wxBitmap my_toucan_scaled_high;
+ wxBitmap my_toucan_blur;
int xH, yH ;
int m_ani_images;
void OnAbout( wxCommandEvent &event );
void OnNewFrame( wxCommandEvent &event );
+ void OnImageInfo( wxCommandEvent &event );
#ifdef wxHAVE_RAW_BITMAP
void OnTestRawBitmap( wxCommandEvent &event );
#endif // wxHAVE_RAW_BITMAP
MyCanvas *m_canvas;
private:
+ // ask user for the file name and try to load an image from it
+ //
+ // return the file path on success, empty string if we failed to load the
+ // image or were cancelled by user
+ static wxString LoadUserImage(wxImage& image);
+
+
DECLARE_DYNAMIC_CLASS(MyFrame)
DECLARE_EVENT_TABLE()
};
+// ----------------------------------------------------------------------------
+// Frame used for showing a standalone image
+// ----------------------------------------------------------------------------
+
+enum
+{
+ ID_ROTATE_LEFT = 100,
+ ID_ROTATE_RIGHT,
+ ID_RESIZE
+};
+
class MyImageFrame : public wxFrame
{
public:
- MyImageFrame(wxFrame *parent, const wxBitmap& bitmap)
- : wxFrame(parent, wxID_ANY, _T("Double click to save"),
+ MyImageFrame(wxFrame *parent, const wxString& desc, const wxBitmap& bitmap)
+ : wxFrame(parent, wxID_ANY,
+ wxString::Format(_T("Image from %s"), desc.c_str()),
wxDefaultPosition, wxDefaultSize,
- wxCAPTION | wxSYSTEM_MENU | wxCLOSE_BOX),
+ wxDEFAULT_FRAME_STYLE | wxFULL_REPAINT_ON_RESIZE),
m_bitmap(bitmap)
{
+ wxMenu *menu = new wxMenu;
+ menu->Append(wxID_SAVE);
+ menu->AppendSeparator();
+ menu->Append(ID_RESIZE, _T("&Fit to window\tCtrl-F"));
+ menu->AppendSeparator();
+ menu->Append(ID_ROTATE_LEFT, _T("Rotate &left\tCtrl-L"));
+ menu->Append(ID_ROTATE_RIGHT, _T("Rotate &right\tCtrl-R"));
+
+ wxMenuBar *mbar = new wxMenuBar;
+ mbar->Append(menu, _T("&Image"));
+ SetMenuBar(mbar);
+
+ CreateStatusBar();
+
SetClientSize(bitmap.GetWidth(), bitmap.GetHeight());
+
+ UpdateStatusBar();
}
void OnEraseBackground(wxEraseEvent& WXUNUSED(event))
void OnPaint(wxPaintEvent& WXUNUSED(event))
{
- wxPaintDC dc( this );
- dc.DrawBitmap( m_bitmap, 0, 0, true /* use mask */ );
+ wxPaintDC dc(this);
+ const wxSize size = GetClientSize();
+ dc.DrawBitmap(m_bitmap,
+ (size.x - m_bitmap.GetWidth())/2,
+ (size.y - m_bitmap.GetHeight())/2,
+ true /* use mask */);
}
- void OnSave(wxMouseEvent& WXUNUSED(event))
+ void OnSave(wxCommandEvent& WXUNUSED(event))
{
#if wxUSE_FILEDLG
wxImage image = m_bitmap.ConvertToImage();
wxFileName::SplitPath(savefilename, NULL, NULL, &extension);
bool saved = false;
- if ( extension == _T("bpp") )
+ if ( extension == _T("bmp") )
{
static const int bppvalues[] =
{
#endif // wxUSE_FILEDLG
}
+ void OnResize(wxCommandEvent& WXUNUSED(event))
+ {
+ wxImage img(m_bitmap.ConvertToImage());
+
+ const wxSize size = GetClientSize();
+ img.Rescale(size.x, size.y, wxIMAGE_QUALITY_HIGH);
+ m_bitmap = wxBitmap(img);
+
+ UpdateStatusBar();
+ Refresh();
+ }
+
+ void OnRotate(wxCommandEvent& event)
+ {
+ double angle = 5;
+ if ( event.GetId() == ID_ROTATE_LEFT )
+ angle = -angle;
+
+ wxImage img(m_bitmap.ConvertToImage());
+ img = img.Rotate(angle, wxPoint(img.GetWidth() / 2, img.GetHeight() / 2));
+ if ( !img.Ok() )
+ {
+ wxLogWarning(_T("Rotation failed"));
+ return;
+ }
+
+ m_bitmap = wxBitmap(img);
+
+ UpdateStatusBar();
+ Refresh();
+ }
+
private:
+ void UpdateStatusBar()
+ {
+ wxLogStatus(this, _T("Image size: (%d, %d)"),
+ m_bitmap.GetWidth(),
+ m_bitmap.GetHeight());
+ }
+
wxBitmap m_bitmap;
DECLARE_EVENT_TABLE()
MyRawBitmapFrame(wxFrame *parent)
: wxFrame(parent, wxID_ANY, _T("Raw bitmaps (how exciting)")),
- m_bitmap(SIZE, SIZE, 32)
+ m_bitmap(SIZE, SIZE, 24),
+ m_alphaBitmap(SIZE, SIZE, 32)
{
- SetClientSize(SIZE, SIZE);
+ SetClientSize(SIZE, SIZE*2+25);
+
+ InitAlphaBitmap();
+ InitBitmap();
- // another possibility: wxNativePixelData (don't forget to remove code
- // setting alpha in the loop below then)
- typedef wxAlphaPixelData Data;
- // typedef wxNativePixelData Data;
+ }
+ void InitAlphaBitmap()
+ {
// First, clear the whole bitmap by making it alpha
{
- Data data( m_bitmap, wxPoint(0,0), wxSize(SIZE, SIZE) );
+ wxAlphaPixelData data( m_alphaBitmap, wxPoint(0,0), wxSize(SIZE, SIZE) );
if ( !data )
{
wxLogError(_T("Failed to gain raw access to bitmap data"));
return;
}
- data.UseAlpha();
- Data::Iterator p(data);
+ wxAlphaPixelData::Iterator p(data);
for ( int y = 0; y < SIZE; ++y )
{
- Data::Iterator rowStart = p;
+ wxAlphaPixelData::Iterator rowStart = p;
for ( int x = 0; x < SIZE; ++x )
{
p.Alpha() = 0;
}
// Then, draw colourful alpha-blended stripes
- Data data(m_bitmap, wxPoint(BORDER, BORDER) , wxSize(REAL_SIZE, REAL_SIZE));
+ wxAlphaPixelData data(m_alphaBitmap, wxPoint(BORDER, BORDER),
+ wxSize(REAL_SIZE, REAL_SIZE));
if ( !data )
{
wxLogError(_T("Failed to gain raw access to bitmap data"));
return;
}
- data.UseAlpha();
-
- Data::Iterator p(data);
+ wxAlphaPixelData::Iterator p(data);
for ( int y = 0; y < REAL_SIZE; ++y )
{
- Data::Iterator rowStart = p;
+ wxAlphaPixelData::Iterator rowStart = p;
int r = y < REAL_SIZE/3 ? 255 : 0,
g = (REAL_SIZE/3 <= y) && (y < 2*(REAL_SIZE/3)) ? 255 : 0,
for ( int x = 0; x < REAL_SIZE; ++x )
{
// note that RGB must be premultiplied by alpha
- unsigned a = (Data::Iterator::ChannelType)((x*255.)/REAL_SIZE);
+ unsigned a = (wxAlphaPixelData::Iterator::ChannelType)((x*255.)/REAL_SIZE);
p.Red() = r * a / 256;
p.Green() = g * a / 256;
p.Blue() = b * a / 256;
}
}
+ void InitBitmap()
+ {
+ // draw some colourful stripes without alpha
+ wxNativePixelData data(m_bitmap);
+ if ( !data )
+ {
+ wxLogError(_T("Failed to gain raw access to bitmap data"));
+ return;
+ }
+
+ wxNativePixelData::Iterator p(data);
+ for ( int y = 0; y < SIZE; ++y )
+ {
+ wxNativePixelData::Iterator rowStart = p;
+
+ int r = y < SIZE/3 ? 255 : 0,
+ g = (SIZE/3 <= y) && (y < 2*(SIZE/3)) ? 255 : 0,
+ b = 2*(SIZE/3) <= y ? 255 : 0;
+
+ for ( int x = 0; x < SIZE; ++x )
+ {
+ p.Red() = r;
+ p.Green() = g;
+ p.Blue() = b;
+ ++p; // same as p.OffsetX(1)
+ }
+
+ p = rowStart;
+ p.OffsetY(data, 1);
+ }
+ }
+
void OnPaint(wxPaintEvent& WXUNUSED(event))
{
wxPaintDC dc( this );
dc.DrawText(_T("This is alpha and raw bitmap test"), 0, BORDER);
dc.DrawText(_T("This is alpha and raw bitmap test"), 0, SIZE/2 - BORDER);
dc.DrawText(_T("This is alpha and raw bitmap test"), 0, SIZE - 2*BORDER);
- dc.DrawBitmap( m_bitmap, 0, 0, true /* use mask */ );
+ dc.DrawBitmap( m_alphaBitmap, 0, 0, true /* use mask */ );
+
+ dc.DrawText(_T("Raw bitmap access without alpha"), 0, SIZE+5);
+ dc.DrawBitmap( m_bitmap, 0, SIZE+5+dc.GetCharHeight());
}
private:
wxBitmap m_bitmap;
+ wxBitmap m_alphaBitmap;
DECLARE_EVENT_TABLE()
};
BEGIN_EVENT_TABLE(MyImageFrame, wxFrame)
EVT_ERASE_BACKGROUND(MyImageFrame::OnEraseBackground)
EVT_PAINT(MyImageFrame::OnPaint)
- EVT_LEFT_DCLICK(MyImageFrame::OnSave)
+
+ EVT_MENU(wxID_SAVE, MyImageFrame::OnSave)
+ EVT_MENU_RANGE(ID_ROTATE_LEFT, ID_ROTATE_RIGHT, MyImageFrame::OnRotate)
+ EVT_MENU(ID_RESIZE, MyImageFrame::OnResize)
END_EVENT_TABLE()
#ifdef wxHAVE_RAW_BITMAP
#endif // wxHAVE_RAW_BITMAP
BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
- EVT_PAINT(MyCanvas::OnPaint)
+ EVT_PAINT(MyCanvas::OnPaint)
END_EVENT_TABLE()
MyCanvas::MyCanvas( wxWindow *parent, wxWindowID id,
const wxPoint &pos, const wxSize &size )
- : wxScrolledWindow( parent, id, pos, size, wxSUNKEN_BORDER )
- , m_bmpSmileXpm((const char **) smile_xpm)
- , m_iconSmileXpm((const char **) smile_xpm)
+ : wxScrolledWindow( parent, id, pos, size, wxSUNKEN_BORDER )
+ , m_bmpSmileXpm(smile_xpm)
+ , m_iconSmileXpm(smile_xpm)
{
my_horse_ani = NULL;
m_ani_images = 0 ;
else
my_horse_png = wxBitmap( image );
- image = wxImage(wxT("toucan.png"));
- my_toucan = wxBitmap(image);
+ if ( !image.LoadFile( dir + _T("toucan.png")) )
+ wxLogError(wxT("Can't load PNG image"));
+ else
+ my_toucan = wxBitmap(image);
+
my_toucan_flipped_horiz = wxBitmap(image.Mirror(true));
my_toucan_flipped_vert = wxBitmap(image.Mirror(false));
my_toucan_flipped_both = wxBitmap(image.Mirror(true).Mirror(false));
+ my_toucan_grey = wxBitmap(image.ConvertToGreyscale());
my_toucan_head = wxBitmap(image.GetSubImage(wxRect(40, 7, 80, 60)));
+ my_toucan_scaled_normal = wxBitmap(image.Scale(110,90,wxIMAGE_QUALITY_NORMAL));
+ my_toucan_scaled_high = wxBitmap(image.Scale(110,90,wxIMAGE_QUALITY_HIGH));
+ my_toucan_blur = wxBitmap(image.Blur(10));
#endif // wxUSE_LIBPNG
my_horse_tiff = wxBitmap( image );
#endif
+#if wxUSE_LIBTIFF
+ image.Destroy();
+
+ if ( !image.LoadFile( dir + _T("horse.tga"), wxBITMAP_TYPE_TGA ) )
+ wxLogError(wxT("Can't load TGA image"));
+ else
+ my_horse_tga = wxBitmap( image );
+#endif
+
CreateAntiAliasedBitmap();
my_smile_xbm = wxBitmap( (const char*)smile_bits, smile_width,
if (my_horse_tiff.Ok())
dc.DrawBitmap( my_horse_tiff, 30, 1530 );
- dc.DrawText( _T("XPM handler"), 30, 1745 );
+ dc.DrawText( _T("TGA handler"), 30, 1745 );
+ if (my_horse_tga.Ok())
+ dc.DrawBitmap( my_horse_tga, 30, 1760 );
+
+ dc.DrawText( _T("XPM handler"), 30, 1975 );
if (my_horse_xpm.Ok())
- dc.DrawBitmap( my_horse_xpm, 30, 1760 );
+ dc.DrawBitmap( my_horse_xpm, 30, 2000 );
// toucans
{
int x = 750, y = 10, yy = 170;
dc.DrawText(wxT("Original toucan"), x+50, y);
- dc.DrawBitmap(my_toucan, x, y+15);
+ dc.DrawBitmap(my_toucan, x, y+15, true);
y += yy;
dc.DrawText(wxT("Flipped horizontally"), x+50, y);
- dc.DrawBitmap(my_toucan_flipped_horiz, x, y+15);
+ dc.DrawBitmap(my_toucan_flipped_horiz, x, y+15, true);
y += yy;
dc.DrawText(wxT("Flipped vertically"), x+50, y);
- dc.DrawBitmap(my_toucan_flipped_vert, x, y+15);
+ dc.DrawBitmap(my_toucan_flipped_vert, x, y+15, true);
y += yy;
dc.DrawText(wxT("Flipped both h&v"), x+50, y);
- dc.DrawBitmap(my_toucan_flipped_both, x, y+15);
+ dc.DrawBitmap(my_toucan_flipped_both, x, y+15, true);
+
+ y += yy;
+ dc.DrawText(wxT("In greyscale"), x+50, y);
+ dc.DrawBitmap(my_toucan_grey, x, y+15, true);
y += yy;
dc.DrawText(wxT("Toucan's head"), x+50, y);
- dc.DrawBitmap(my_toucan_head, x, y+15);
+ dc.DrawBitmap(my_toucan_head, x, y+15, true);
+
+ y += yy;
+ dc.DrawText(wxT("Scaled with normal quality"), x+50, y);
+ dc.DrawBitmap(my_toucan_scaled_normal, x, y+15, true);
+
+ y += yy;
+ dc.DrawText(wxT("Scaled with high quality"), x+50, y);
+ dc.DrawBitmap(my_toucan_scaled_high, x, y+15, true);
+
+ y += yy;
+ dc.DrawText(wxT("Blured"), x+50, y);
+ dc.DrawBitmap(my_toucan_blur, x, y+15, true);
}
if (my_smile_xbm.Ok())
{
- dc.DrawText( _T("XBM bitmap"), 30, 1975 );
- dc.DrawText( _T("(green on red)"), 30, 1990 );
+ int x = 300, y = 1800;
+
+ dc.DrawText( _T("XBM bitmap"), x, y );
+ dc.DrawText( _T("(green on red)"), x, y + 15 );
dc.SetTextForeground( _T("GREEN") );
dc.SetTextBackground( _T("RED") );
- dc.DrawBitmap( my_smile_xbm, 30, 2010 );
+ dc.DrawBitmap( my_smile_xbm, x, y + 30 );
dc.SetTextForeground( *wxBLACK );
- dc.DrawText( _T("After wxImage conversion"), 150, 1975 );
- dc.DrawText( _T("(red on white)"), 150, 1990 );
+ dc.DrawText( _T("After wxImage conversion"), x + 120, y );
+ dc.DrawText( _T("(red on white)"), x + 120, y + 15 );
dc.SetTextForeground( wxT("RED") );
wxImage i = my_smile_xbm.ConvertToImage();
i.SetMaskColour( 255, 255, 255 );
wxRED_PEN->GetColour().Red(),
wxRED_PEN->GetColour().Green(),
wxRED_PEN->GetColour().Blue() );
- dc.DrawBitmap( wxBitmap(i), 150, 2010, true );
+ dc.DrawBitmap( wxBitmap(i), x + 120, y + 30, true );
dc.SetTextForeground( *wxBLACK );
}
if (mono.Ok())
{
- dc.DrawText( _T("Mono bitmap"), 30, 2095 );
- dc.DrawText( _T("(red on green)"), 30, 2110 );
+ int x = 300, y = 1900;
+
+ dc.DrawText( _T("Mono bitmap"), x, y );
+ dc.DrawText( _T("(red on green)"), x, y + 15 );
dc.SetTextForeground( wxT("RED") );
dc.SetTextBackground( wxT("GREEN") );
- dc.DrawBitmap( mono, 30, 2130 );
+ dc.DrawBitmap( mono, x, y + 30 );
dc.SetTextForeground( *wxBLACK );
- dc.DrawText( _T("After wxImage conversion"), 150, 2095 );
- dc.DrawText( _T("(red on white)"), 150, 2110 );
+ dc.DrawText( _T("After wxImage conversion"), x + 120, y );
+ dc.DrawText( _T("(red on white)"), x + 120, y + 15 );
dc.SetTextForeground( wxT("RED") );
wxImage i = mono.ConvertToImage();
i.SetMaskColour( 255,255,255 );
wxRED_PEN->GetColour().Red(),
wxRED_PEN->GetColour().Green(),
wxRED_PEN->GetColour().Blue() );
- dc.DrawBitmap( wxBitmap(i), 150, 2130, true );
+ dc.DrawBitmap( wxBitmap(i), x + 120, y + 30, true );
dc.SetTextForeground( *wxBLACK );
}
ID_QUIT = wxID_EXIT,
ID_ABOUT = wxID_ABOUT,
ID_NEW = 100,
- ID_SHOWRAW = 101
+ ID_INFO,
+ ID_SHOWRAW
};
IMPLEMENT_DYNAMIC_CLASS( MyFrame, wxFrame )
-BEGIN_EVENT_TABLE(MyFrame,wxFrame)
+BEGIN_EVENT_TABLE(MyFrame, wxFrame)
EVT_MENU (ID_ABOUT, MyFrame::OnAbout)
EVT_MENU (ID_QUIT, MyFrame::OnQuit)
- EVT_MENU (ID_NEW, MyFrame::OnNewFrame)
+ EVT_MENU (ID_NEW, MyFrame::OnNewFrame)
+ EVT_MENU (ID_INFO, MyFrame::OnImageInfo)
#ifdef wxHAVE_RAW_BITMAP
- EVT_MENU (ID_SHOWRAW, MyFrame::OnTestRawBitmap)
+ EVT_MENU (ID_SHOWRAW, MyFrame::OnTestRawBitmap)
#endif
#if wxUSE_CLIPBOARD
wxMenu *menuImage = new wxMenu;
menuImage->Append( ID_NEW, _T("&Show any image...\tCtrl-O"));
-
+ menuImage->Append( ID_INFO, _T("Show image &information...\tCtrl-I"));
#ifdef wxHAVE_RAW_BITMAP
+ menuImage->AppendSeparator();
menuImage->Append( ID_SHOWRAW, _T("Test &raw bitmap...\tCtrl-R"));
#endif
menuImage->AppendSeparator();
_T("About wxImage Demo"), wxICON_INFORMATION | wxOK );
}
-void MyFrame::OnNewFrame( wxCommandEvent &WXUNUSED(event) )
+wxString MyFrame::LoadUserImage(wxImage& image)
{
+ wxString filename;
+
#if wxUSE_FILEDLG
- wxString filename = wxFileSelector(_T("Select image file"));
- if ( !filename )
- return;
+ filename = wxFileSelector(_T("Select image file"));
+ if ( !filename.empty() )
+ {
+ if ( !image.LoadFile(filename) )
+ {
+ wxLogError(_T("Couldn't load image from '%s'."), filename.c_str());
+
+ return wxEmptyString;
+ }
+ }
+#endif // wxUSE_FILEDLG
+
+ return filename;
+}
+void MyFrame::OnNewFrame( wxCommandEvent &WXUNUSED(event) )
+{
wxImage image;
- if ( !image.LoadFile(filename) )
+ wxString filename = LoadUserImage(image);
+ if ( !filename.empty() )
+ (new MyImageFrame(this, filename, wxBitmap(image)))->Show();
+}
+
+void MyFrame::OnImageInfo( wxCommandEvent &WXUNUSED(event) )
+{
+ wxImage image;
+ if ( !LoadUserImage(image).empty() )
{
- wxLogError(_T("Couldn't load image from '%s'."), filename.c_str());
+ // TODO: show more information about the file
+ wxString info = wxString::Format("Image size: %dx%d",
+ image.GetWidth(),
+ image.GetHeight());
+
+ int xres = image.GetOptionInt(wxIMAGE_OPTION_RESOLUTIONX),
+ yres = image.GetOptionInt(wxIMAGE_OPTION_RESOLUTIONY);
+ if ( xres || yres )
+ {
+ info += wxString::Format("\nResolution: %dx%d", xres, yres);
+ switch ( image.GetOptionInt(wxIMAGE_OPTION_RESOLUTIONUNIT) )
+ {
+ default:
+ wxFAIL_MSG( "unknown image resolution units" );
+ // fall through
- return;
- }
+ case wxIMAGE_RESOLUTION_NONE:
+ info += " in default units";
+ break;
- (new MyImageFrame(this, wxBitmap(image)))->Show();
-#endif // wxUSE_FILEDLG
+ case wxIMAGE_RESOLUTION_INCHES:
+ info += " in";
+ break;
+
+ case wxIMAGE_RESOLUTION_CM:
+ info += " cm";
+ break;
+ }
+ }
+
+ wxLogMessage("%s", info);
+ }
}
#ifdef wxHAVE_RAW_BITMAP
}
else
{
- (new MyImageFrame(this, dobjBmp.GetBitmap()))->Show();
+ (new MyImageFrame(this, _T("Clipboard"), dobjBmp.GetBitmap()))->Show();
}
wxTheClipboard->Close();
}
bool MyApp::OnInit()
{
-#if wxUSE_LIBPNG
- wxImage::AddHandler( new wxPNGHandler );
-#endif
-
-#if wxUSE_LIBJPEG
- wxImage::AddHandler( new wxJPEGHandler );
-#endif
-
-#if wxUSE_LIBTIFF
- wxImage::AddHandler( new wxTIFFHandler );
-#endif
-
-#if wxUSE_GIF
- wxImage::AddHandler( new wxGIFHandler );
-#endif
+ if ( !wxApp::OnInit() )
+ return false;
-#if wxUSE_PCX
- wxImage::AddHandler( new wxPCXHandler );
-#endif
-
-#if wxUSE_PNM
- wxImage::AddHandler( new wxPNMHandler );
-#endif
-
-#if wxUSE_XPM
- wxImage::AddHandler( new wxXPMHandler );
-#endif
-
-#if wxUSE_ICO_CUR
- wxImage::AddHandler( new wxICOHandler );
- wxImage::AddHandler( new wxCURHandler );
- wxImage::AddHandler( new wxANIHandler );
-#endif
+ wxInitAllImageHandlers();
- wxFrame *frame = new MyFrame();
- frame->Show( true );
+ wxFrame *frame = new MyFrame();
+ frame->Show( true );
- return true;
+ return true;
}
projects / wxWidgets.git / blobdiff