X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/c1099d92544fb97cb230248e50cf0c81a2633cdd..64ea838d8f4d1853b7d850db93ee565e901d099a:/src/common/image.cpp diff --git a/src/common/image.cpp b/src/common/image.cpp index d3bf74c5c4..2c61998e6d 100644 --- a/src/common/image.cpp +++ b/src/common/image.cpp @@ -26,9 +26,9 @@ #include "wx/module.h" #include "wx/palette.h" #include "wx/intl.h" + #include "wx/colour.h" #endif -#include "wx/filefn.h" #include "wx/wfstream.h" #include "wx/xpmdecod.h" @@ -53,7 +53,14 @@ IMPLEMENT_VARIANT_OBJECT_EXPORTED_SHALLOWCMP(wxImage,WXDLLEXPORT) #endif //----------------------------------------------------------------------------- -// wxImage +// global data +//----------------------------------------------------------------------------- + +wxList wxImage::sm_handlers; +wxImage wxNullImage; + +//----------------------------------------------------------------------------- +// wxImageRefData //----------------------------------------------------------------------------- class wxImageRefData: public wxObjectRefData @@ -88,7 +95,7 @@ public: wxArrayString m_optionNames; wxArrayString m_optionValues; - DECLARE_NO_COPY_CLASS(wxImageRefData) + wxDECLARE_NO_COPY_CLASS(wxImageRefData); }; wxImageRefData::wxImageRefData() @@ -117,58 +124,15 @@ wxImageRefData::~wxImageRefData() free( m_alpha ); } -wxList wxImage::sm_handlers; - -wxImage wxNullImage; +//----------------------------------------------------------------------------- +// wxImage //----------------------------------------------------------------------------- #define M_IMGDATA static_cast(m_refData) IMPLEMENT_DYNAMIC_CLASS(wxImage, wxObject) -wxImage::wxImage( int width, int height, bool clear ) -{ - Create( width, height, clear ); -} - -wxImage::wxImage( int width, int height, unsigned char* data, bool static_data ) -{ - Create( width, height, data, static_data ); -} - -wxImage::wxImage( int width, int height, unsigned char* data, unsigned char* alpha, bool static_data ) -{ - Create( width, height, data, alpha, static_data ); -} - -wxImage::wxImage( const wxString& name, wxBitmapType type, int index ) -{ - LoadFile( name, type, index ); -} - -wxImage::wxImage( const wxString& name, const wxString& mimetype, int index ) -{ - LoadFile( name, mimetype, index ); -} - -#if wxUSE_STREAMS -wxImage::wxImage( wxInputStream& stream, wxBitmapType type, int index ) -{ - LoadFile( stream, type, index ); -} - -wxImage::wxImage( wxInputStream& stream, const wxString& mimetype, int index ) -{ - LoadFile( stream, mimetype, index ); -} -#endif // wxUSE_STREAMS - -wxImage::wxImage(const char* const* xpmData) -{ - Create(xpmData); -} - bool wxImage::Create(const char* const* xpmData) { #if wxUSE_XPM @@ -176,8 +140,9 @@ bool wxImage::Create(const char* const* xpmData) wxXPMDecoder decoder; (*this) = decoder.ReadData(xpmData); - return Ok(); + return IsOk(); #else + wxUnusedVar(xpmData); return false; #endif } @@ -211,7 +176,7 @@ bool wxImage::Create( int width, int height, unsigned char* data, bool static_da { UnRef(); - wxCHECK_MSG( data, false, _T("NULL data in wxImage::Create") ); + wxCHECK_MSG( data, false, wxT("NULL data in wxImage::Create") ); m_refData = new wxImageRefData(); @@ -228,7 +193,7 @@ bool wxImage::Create( int width, int height, unsigned char* data, unsigned char* { UnRef(); - wxCHECK_MSG( data, false, _T("NULL data in wxImage::Create") ); + wxCHECK_MSG( data, false, wxT("NULL data in wxImage::Create") ); m_refData = new wxImageRefData(); @@ -288,11 +253,48 @@ wxObjectRefData* wxImage::CloneRefData(const wxObjectRefData* that) const return refData_new; } +// returns a new image with the same dimensions, alpha, and mask as *this +// if on_its_side is true, width and height are swapped +wxImage wxImage::MakeEmptyClone(int flags) const +{ + wxImage image; + + wxCHECK_MSG( IsOk(), image, wxS("invalid image") ); + + long height = M_IMGDATA->m_height; + long width = M_IMGDATA->m_width; + + if ( flags & Clone_SwapOrientation ) + wxSwap( width, height ); + + if ( !image.Create( width, height, false ) ) + { + wxFAIL_MSG( wxS("unable to create image") ); + return image; + } + + if ( M_IMGDATA->m_alpha ) + { + image.SetAlpha(); + wxCHECK2_MSG( image.GetAlpha(), return wxImage(), + wxS("unable to create alpha channel") ); + } + + if ( M_IMGDATA->m_hasMask ) + { + image.SetMaskColour( M_IMGDATA->m_maskRed, + M_IMGDATA->m_maskGreen, + M_IMGDATA->m_maskBlue ); + } + + return image; +} + wxImage wxImage::Copy() const { wxImage image; - wxCHECK_MSG( Ok(), image, wxT("invalid image") ); + wxCHECK_MSG( IsOk(), image, wxT("invalid image") ); image.m_refData = CloneRefData(m_refData); @@ -306,7 +308,7 @@ wxImage wxImage::ShrinkBy( int xFactor , int yFactor ) const wxImage image; - wxCHECK_MSG( Ok(), image, wxT("invalid image") ); + wxCHECK_MSG( IsOk(), image, wxT("invalid image") ); // can't scale to/from 0 size wxCHECK_MSG( (xFactor > 0) && (yFactor > 0), image, @@ -330,11 +332,11 @@ wxImage wxImage::ShrinkBy( int xFactor , int yFactor ) const bool hasMask = false ; unsigned char maskRed = 0; unsigned char maskGreen = 0; - unsigned char maskBlue =0 ; + unsigned char maskBlue = 0 ; - unsigned char *source_data = M_IMGDATA->m_data; + const unsigned char *source_data = M_IMGDATA->m_data; unsigned char *target_data = data; - unsigned char *source_alpha = 0 ; + const unsigned char *source_alpha = 0 ; unsigned char *target_alpha = 0 ; if (M_IMGDATA->m_hasMask) { @@ -372,7 +374,7 @@ wxImage wxImage::ShrinkBy( int xFactor , int yFactor ) const long y_offset = (y * yFactor + y1) * old_width; for ( int x1 = 0 ; x1 < xFactor ; ++x1 ) { - unsigned char *pixel = source_data + 3 * ( y_offset + x * xFactor + x1 ) ; + const unsigned char *pixel = source_data + 3 * ( y_offset + x * xFactor + x1 ) ; unsigned char red = pixel[0] ; unsigned char green = pixel[1] ; unsigned char blue = pixel[2] ; @@ -420,11 +422,12 @@ wxImage wxImage::ShrinkBy( int xFactor , int yFactor ) const return image; } -wxImage wxImage::Scale( int width, int height, int quality ) const +wxImage +wxImage::Scale( int width, int height, wxImageResizeQuality quality ) const { wxImage image; - wxCHECK_MSG( Ok(), image, wxT("invalid image") ); + wxCHECK_MSG( IsOk(), image, wxT("invalid image") ); // can't scale to/from 0 size wxCHECK_MSG( (width > 0) && (height > 0), image, @@ -440,78 +443,37 @@ wxImage wxImage::Scale( int width, int height, int quality ) const if ( old_width == width && old_height == height ) return *this; - // Scale the image (...or more appropriately, resample the image) using - // either the high-quality or normal method as specified - if ( quality == wxIMAGE_QUALITY_HIGH ) + if (quality == wxIMAGE_QUALITY_HIGH) { - // We need to check whether we are downsampling or upsampling the image - if ( width < old_width && height < old_height ) - { - // Downsample the image using the box averaging method for best results - image = ResampleBox(width, height); - } - else - { - // For upsampling or other random/wierd image dimensions we'll use - // a bicubic b-spline scaling method - image = ResampleBicubic(width, height); - } + quality = (width < old_width && height < old_height) + ? wxIMAGE_QUALITY_BOX_AVERAGE + : wxIMAGE_QUALITY_BICUBIC; } - else // Default scaling method == simple pixel replication - { - if ( old_width % width == 0 && old_width >= width && - old_height % height == 0 && old_height >= height ) - { - return ShrinkBy( old_width / width , old_height / height ) ; - } - image.Create( width, height, false ); - - unsigned char *data = image.GetData(); - - wxCHECK_MSG( data, image, wxT("unable to create image") ); - unsigned char *source_data = M_IMGDATA->m_data; - unsigned char *target_data = data; - unsigned char *source_alpha = 0 ; - unsigned char *target_alpha = 0 ; - - if ( !M_IMGDATA->m_hasMask ) - { - source_alpha = M_IMGDATA->m_alpha ; - if ( source_alpha ) + // Resample the image using the method as specified. + switch ( quality ) + { + case wxIMAGE_QUALITY_NEAREST: + if ( old_width % width == 0 && old_width >= width && + old_height % height == 0 && old_height >= height ) { - image.SetAlpha() ; - target_alpha = image.GetAlpha() ; + return ShrinkBy( old_width / width , old_height / height ); } - } - long x_delta = (old_width<<16) / width; - long y_delta = (old_height<<16) / height; + image = ResampleNearest(width, height); + break; - unsigned char* dest_pixel = target_data; + case wxIMAGE_QUALITY_BILINEAR: + image = ResampleBilinear(width, height); + break; - long y = 0; - for ( long j = 0; j < height; j++ ) - { - unsigned char* src_line = &source_data[(y>>16)*old_width*3]; - unsigned char* src_alpha_line = source_alpha ? &source_alpha[(y>>16)*old_width] : 0 ; - - long x = 0; - for ( long i = 0; i < width; i++ ) - { - unsigned char* src_pixel = &src_line[(x>>16)*3]; - unsigned char* src_alpha_pixel = source_alpha ? &src_alpha_line[(x>>16)] : 0 ; - dest_pixel[0] = src_pixel[0]; - dest_pixel[1] = src_pixel[1]; - dest_pixel[2] = src_pixel[2]; - dest_pixel += 3; - if ( source_alpha ) - *(target_alpha++) = *src_alpha_pixel ; - x += x_delta; - } + case wxIMAGE_QUALITY_BICUBIC: + image = ResampleBicubic(width, height); + break; - y += y_delta; - } + case wxIMAGE_QUALITY_BOX_AVERAGE: + image = ResampleBox(width, height); + break; } // If the original image has a mask, apply the mask to the new image @@ -533,6 +495,63 @@ wxImage wxImage::Scale( int width, int height, int quality ) const return image; } +wxImage wxImage::ResampleNearest(int width, int height) const +{ + wxImage image; + image.Create( width, height, false ); + + unsigned char *data = image.GetData(); + + wxCHECK_MSG( data, image, wxT("unable to create image") ); + + const unsigned char *source_data = M_IMGDATA->m_data; + unsigned char *target_data = data; + const unsigned char *source_alpha = 0 ; + unsigned char *target_alpha = 0 ; + + if ( !M_IMGDATA->m_hasMask ) + { + source_alpha = M_IMGDATA->m_alpha ; + if ( source_alpha ) + { + image.SetAlpha() ; + target_alpha = image.GetAlpha() ; + } + } + + long old_height = M_IMGDATA->m_height, + old_width = M_IMGDATA->m_width; + long x_delta = (old_width<<16) / width; + long y_delta = (old_height<<16) / height; + + unsigned char* dest_pixel = target_data; + + long y = 0; + for ( long j = 0; j < height; j++ ) + { + const unsigned char* src_line = &source_data[(y>>16)*old_width*3]; + const unsigned char* src_alpha_line = source_alpha ? &source_alpha[(y>>16)*old_width] : 0 ; + + long x = 0; + for ( long i = 0; i < width; i++ ) + { + const unsigned char* src_pixel = &src_line[(x>>16)*3]; + const unsigned char* src_alpha_pixel = source_alpha ? &src_alpha_line[(x>>16)] : 0 ; + dest_pixel[0] = src_pixel[0]; + dest_pixel[1] = src_pixel[1]; + dest_pixel[2] = src_pixel[2]; + dest_pixel += 3; + if ( source_alpha ) + *(target_alpha++) = *src_alpha_pixel ; + x += x_delta; + } + + y += y_delta; + } + + return image; +} + wxImage wxImage::ResampleBox(int width, int height) const { // This function implements a simple pre-blur/box averaging method for @@ -548,8 +567,8 @@ wxImage wxImage::ResampleBox(int width, int height) const const int scale_factor_x_2 = (int)(scale_factor_x / 2); const int scale_factor_y_2 = (int)(scale_factor_y / 2); - unsigned char* src_data = M_IMGDATA->m_data; - unsigned char* src_alpha = M_IMGDATA->m_alpha; + const unsigned char* src_data = M_IMGDATA->m_data; + const unsigned char* src_alpha = M_IMGDATA->m_alpha; unsigned char* dst_data = ret_image.GetData(); unsigned char* dst_alpha = NULL; @@ -576,16 +595,16 @@ wxImage wxImage::ResampleBox(int width, int height) const averaged_pixels = 0; sum_r = sum_g = sum_b = sum_a = 0.0; - for ( int j = int(src_y - scale_factor_y/2.0 + 1); - j <= int(src_y + scale_factor_y_2); + for ( int j = int(src_y - scale_factor_y/2.0 + 1), k = j; + j <= int(src_y + scale_factor_y_2) || j < k + 2; j++ ) { // We don't care to average pixels that don't exist (edges) if ( j < 0 || j > M_IMGDATA->m_height - 1 ) continue; - for ( int i = int(src_x - scale_factor_x/2.0 + 1); - i <= src_x + scale_factor_x_2; + for ( int i = int(src_x - scale_factor_x/2.0 + 1), e = i; + i <= src_x + scale_factor_x_2 || i < e + 2; i++ ) { // Don't average edge pixels @@ -618,6 +637,92 @@ wxImage wxImage::ResampleBox(int width, int height) const return ret_image; } +wxImage wxImage::ResampleBilinear(int width, int height) const +{ + // This function implements a Bilinear algorithm for resampling. + wxImage ret_image(width, height, false); + const unsigned char* src_data = M_IMGDATA->m_data; + const unsigned char* src_alpha = M_IMGDATA->m_alpha; + unsigned char* dst_data = ret_image.GetData(); + unsigned char* dst_alpha = NULL; + + if ( src_alpha ) + { + ret_image.SetAlpha(); + dst_alpha = ret_image.GetAlpha(); + } + double HFactor = double(M_IMGDATA->m_height) / height; + double WFactor = double(M_IMGDATA->m_width) / width; + + int srcpixymax = M_IMGDATA->m_height - 1; + int srcpixxmax = M_IMGDATA->m_width - 1; + + double srcpixy, srcpixy1, srcpixy2, dy, dy1; + double srcpixx, srcpixx1, srcpixx2, dx, dx1; + + // initialize alpha values to avoid g++ warnings about possibly + // uninitialized variables + double r1, g1, b1, a1 = 0; + double r2, g2, b2, a2 = 0; + + for ( int dsty = 0; dsty < height; dsty++ ) + { + // We need to calculate the source pixel to interpolate from - Y-axis + srcpixy = double(dsty) * HFactor; + srcpixy1 = int(srcpixy); + srcpixy2 = ( srcpixy1 == srcpixymax ) ? srcpixy1 : srcpixy1 + 1.0; + dy = srcpixy - (int)srcpixy; + dy1 = 1.0 - dy; + + + for ( int dstx = 0; dstx < width; dstx++ ) + { + // X-axis of pixel to interpolate from + srcpixx = double(dstx) * WFactor; + srcpixx1 = int(srcpixx); + srcpixx2 = ( srcpixx1 == srcpixxmax ) ? srcpixx1 : srcpixx1 + 1.0; + dx = srcpixx - (int)srcpixx; + dx1 = 1.0 - dx; + + int x_offset1 = srcpixx1 < 0.0 ? 0 : srcpixx1 > srcpixxmax ? srcpixxmax : (int)srcpixx1; + int x_offset2 = srcpixx2 < 0.0 ? 0 : srcpixx2 > srcpixxmax ? srcpixxmax : (int)srcpixx2; + int y_offset1 = srcpixy1 < 0.0 ? 0 : srcpixy1 > srcpixymax ? srcpixymax : (int)srcpixy1; + int y_offset2 = srcpixy2 < 0.0 ? 0 : srcpixy2 > srcpixymax ? srcpixymax : (int)srcpixy2; + + int src_pixel_index00 = y_offset1 * M_IMGDATA->m_width + x_offset1; + int src_pixel_index01 = y_offset1 * M_IMGDATA->m_width + x_offset2; + int src_pixel_index10 = y_offset2 * M_IMGDATA->m_width + x_offset1; + int src_pixel_index11 = y_offset2 * M_IMGDATA->m_width + x_offset2; + + // first line + r1 = src_data[src_pixel_index00 * 3 + 0] * dx1 + src_data[src_pixel_index01 * 3 + 0] * dx; + g1 = src_data[src_pixel_index00 * 3 + 1] * dx1 + src_data[src_pixel_index01 * 3 + 1] * dx; + b1 = src_data[src_pixel_index00 * 3 + 2] * dx1 + src_data[src_pixel_index01 * 3 + 2] * dx; + if ( src_alpha ) + a1 = src_alpha[src_pixel_index00] * dx1 + src_alpha[src_pixel_index01] * dx; + + // second line + r2 = src_data[src_pixel_index10 * 3 + 0] * dx1 + src_data[src_pixel_index11 * 3 + 0] * dx; + g2 = src_data[src_pixel_index10 * 3 + 1] * dx1 + src_data[src_pixel_index11 * 3 + 1] * dx; + b2 = src_data[src_pixel_index10 * 3 + 2] * dx1 + src_data[src_pixel_index11 * 3 + 2] * dx; + if ( src_alpha ) + a2 = src_alpha[src_pixel_index10] * dx1 + src_alpha[src_pixel_index11] * dx; + + // result lines + + dst_data[0] = static_cast(r1 * dy1 + r2 * dy); + dst_data[1] = static_cast(g1 * dy1 + g2 * dy); + dst_data[2] = static_cast(b1 * dy1 + b2 * dy); + dst_data += 3; + + if ( src_alpha ) + *dst_alpha++ = static_cast(a1 * dy1 + a2 * dy); + } + } + + return ret_image; +} + // The following two local functions are for the B-spline weighting of the // bicubic sampling algorithm static inline double spline_cube(double value) @@ -666,8 +771,8 @@ wxImage wxImage::ResampleBicubic(int width, int height) const ret_image.Create(width, height, false); - unsigned char* src_data = M_IMGDATA->m_data; - unsigned char* src_alpha = M_IMGDATA->m_alpha; + const unsigned char* src_data = M_IMGDATA->m_data; + const unsigned char* src_alpha = M_IMGDATA->m_alpha; unsigned char* dst_data = ret_image.GetData(); unsigned char* dst_alpha = NULL; @@ -750,26 +855,14 @@ wxImage wxImage::ResampleBicubic(int width, int height) const // Blur in the horizontal direction wxImage wxImage::BlurHorizontal(int blurRadius) const { - wxImage ret_image; - ret_image.Create(M_IMGDATA->m_width, M_IMGDATA->m_height, false); + wxImage ret_image(MakeEmptyClone()); - unsigned char* src_data = M_IMGDATA->m_data; - unsigned char* dst_data = ret_image.GetData(); - unsigned char* src_alpha = M_IMGDATA->m_alpha; - unsigned char* dst_alpha = NULL; + wxCHECK( ret_image.IsOk(), ret_image ); - // Check for a mask or alpha - if ( src_alpha ) - { - ret_image.SetAlpha(); - dst_alpha = ret_image.GetAlpha(); - } - else if ( M_IMGDATA->m_hasMask ) - { - ret_image.SetMaskColour(M_IMGDATA->m_maskRed, - M_IMGDATA->m_maskGreen, - M_IMGDATA->m_maskBlue); - } + const unsigned char* src_data = M_IMGDATA->m_data; + unsigned char* dst_data = ret_image.GetData(); + const unsigned char* src_alpha = M_IMGDATA->m_alpha; + unsigned char* dst_alpha = ret_image.GetAlpha(); // number of pixels we average over const int blurArea = blurRadius*2 + 1; @@ -865,26 +958,14 @@ wxImage wxImage::BlurHorizontal(int blurRadius) const // Blur in the vertical direction wxImage wxImage::BlurVertical(int blurRadius) const { - wxImage ret_image; - ret_image.Create(M_IMGDATA->m_width, M_IMGDATA->m_height, false); + wxImage ret_image(MakeEmptyClone()); - unsigned char* src_data = M_IMGDATA->m_data; - unsigned char* dst_data = ret_image.GetData(); - unsigned char* src_alpha = M_IMGDATA->m_alpha; - unsigned char* dst_alpha = NULL; + wxCHECK( ret_image.IsOk(), ret_image ); - // Check for a mask or alpha - if ( src_alpha ) - { - ret_image.SetAlpha(); - dst_alpha = ret_image.GetAlpha(); - } - else if ( M_IMGDATA->m_hasMask ) - { - ret_image.SetMaskColour(M_IMGDATA->m_maskRed, - M_IMGDATA->m_maskGreen, - M_IMGDATA->m_maskBlue); - } + const unsigned char* src_data = M_IMGDATA->m_data; + unsigned char* dst_data = ret_image.GetData(); + const unsigned char* src_alpha = M_IMGDATA->m_alpha; + unsigned char* dst_alpha = ret_image.GetAlpha(); // number of pixels we average over const int blurArea = blurRadius*2 + 1; @@ -992,62 +1073,144 @@ wxImage wxImage::Blur(int blurRadius) const wxImage wxImage::Rotate90( bool clockwise ) const { - wxImage image; + wxImage image(MakeEmptyClone(Clone_SwapOrientation)); - wxCHECK_MSG( Ok(), image, wxT("invalid image") ); + wxCHECK( image.IsOk(), image ); - image.Create( M_IMGDATA->m_height, M_IMGDATA->m_width, false ); + long height = M_IMGDATA->m_height; + long width = M_IMGDATA->m_width; - unsigned char *data = image.GetData(); + if ( HasOption(wxIMAGE_OPTION_CUR_HOTSPOT_X) ) + { + int hot_x = GetOptionInt( wxIMAGE_OPTION_CUR_HOTSPOT_X ); + image.SetOption(wxIMAGE_OPTION_CUR_HOTSPOT_Y, + clockwise ? hot_x : width - 1 - hot_x); + } - wxCHECK_MSG( data, image, wxT("unable to create image") ); + if ( HasOption(wxIMAGE_OPTION_CUR_HOTSPOT_Y) ) + { + int hot_y = GetOptionInt( wxIMAGE_OPTION_CUR_HOTSPOT_Y ); + image.SetOption(wxIMAGE_OPTION_CUR_HOTSPOT_X, + clockwise ? height - 1 - hot_y : hot_y); + } - unsigned char *source_data = M_IMGDATA->m_data; + unsigned char *data = image.GetData(); unsigned char *target_data; - unsigned char *alpha_data = 0 ; - unsigned char *source_alpha = 0 ; - unsigned char *target_alpha = 0 ; - if (M_IMGDATA->m_hasMask) + // we rotate the image in 21-pixel (63-byte) wide strips + // to make better use of cpu cache - memory transfers + // (note: while much better than single-pixel "strips", + // our vertical strips will still generally straddle 64-byte cachelines) + for (long ii = 0; ii < width; ) { - image.SetMaskColour( M_IMGDATA->m_maskRed, M_IMGDATA->m_maskGreen, M_IMGDATA->m_maskBlue ); + long next_ii = wxMin(ii + 21, width); + + for (long j = 0; j < height; j++) + { + const unsigned char *source_data + = M_IMGDATA->m_data + (j*width + ii)*3; + + for (long i = ii; i < next_ii; i++) + { + if ( clockwise ) + { + target_data = data + ((i + 1)*height - j - 1)*3; + } + else + { + target_data = data + (height*(width - 1 - i) + j)*3; + } + memcpy( target_data, source_data, 3 ); + source_data += 3; + } + } + + ii = next_ii; } - else + + const unsigned char *source_alpha = M_IMGDATA->m_alpha; + + if ( source_alpha ) { - source_alpha = M_IMGDATA->m_alpha ; - if ( source_alpha ) + unsigned char *alpha_data = image.GetAlpha(); + unsigned char *target_alpha = 0 ; + + for (long ii = 0; ii < width; ) { - image.SetAlpha() ; - alpha_data = image.GetAlpha() ; + long next_ii = wxMin(ii + 64, width); + + for (long j = 0; j < height; j++) + { + source_alpha = M_IMGDATA->m_alpha + j*width + ii; + + for (long i = ii; i < next_ii; i++) + { + if ( clockwise ) + { + target_alpha = alpha_data + (i+1)*height - j - 1; + } + else + { + target_alpha = alpha_data + height*(width - i - 1) + j; + } + + *target_alpha = *source_alpha++; + } + } + + ii = next_ii; } } + return image; +} + +wxImage wxImage::Rotate180() const +{ + wxImage image(MakeEmptyClone()); + + wxCHECK( image.IsOk(), image ); + long height = M_IMGDATA->m_height; long width = M_IMGDATA->m_width; + if ( HasOption(wxIMAGE_OPTION_CUR_HOTSPOT_X) ) + { + image.SetOption(wxIMAGE_OPTION_CUR_HOTSPOT_X, + width - 1 - GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_X)); + } + + if ( HasOption(wxIMAGE_OPTION_CUR_HOTSPOT_Y) ) + { + image.SetOption(wxIMAGE_OPTION_CUR_HOTSPOT_Y, + height - 1 - GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_Y)); + } + + unsigned char *data = image.GetData(); + unsigned char *alpha = image.GetAlpha(); + const unsigned char *source_data = M_IMGDATA->m_data; + unsigned char *target_data = data + width * height * 3; + for (long j = 0; j < height; j++) { for (long i = 0; i < width; i++) { - if (clockwise) - { - target_data = data + (((i+1)*height) - j - 1)*3; - if(source_alpha) - target_alpha = alpha_data + (((i+1)*height) - j - 1); - } - else - { - target_data = data + ((height*(width-1)) + j - (i*height))*3; - if(source_alpha) - target_alpha = alpha_data + ((height*(width-1)) + j - (i*height)); - } + target_data -= 3; memcpy( target_data, source_data, 3 ); source_data += 3; + } + } - if(source_alpha) + if ( alpha ) + { + const unsigned char *src_alpha = M_IMGDATA->m_alpha; + unsigned char *dest_alpha = alpha + width * height; + + for (long j = 0; j < height; ++j) + { + for (long i = 0; i < width; ++i) { - memcpy( target_alpha, source_alpha, 1 ); - source_alpha += 1; + *(--dest_alpha) = *(src_alpha++); } } } @@ -1057,30 +1220,16 @@ wxImage wxImage::Rotate90( bool clockwise ) const wxImage wxImage::Mirror( bool horizontally ) const { - wxImage image; - - wxCHECK_MSG( Ok(), image, wxT("invalid image") ); - - image.Create( M_IMGDATA->m_width, M_IMGDATA->m_height, false ); + wxImage image(MakeEmptyClone()); - unsigned char *data = image.GetData(); - unsigned char *alpha = NULL; - - wxCHECK_MSG( data, image, wxT("unable to create image") ); - - if (M_IMGDATA->m_alpha != NULL) { - image.SetAlpha(); - alpha = image.GetAlpha(); - wxCHECK_MSG( alpha, image, wxT("unable to create alpha channel") ); - } - - if (M_IMGDATA->m_hasMask) - image.SetMaskColour( M_IMGDATA->m_maskRed, M_IMGDATA->m_maskGreen, M_IMGDATA->m_maskBlue ); + wxCHECK( image.IsOk(), image ); long height = M_IMGDATA->m_height; long width = M_IMGDATA->m_width; - unsigned char *source_data = M_IMGDATA->m_data; + unsigned char *data = image.GetData(); + unsigned char *alpha = image.GetAlpha(); + const unsigned char *source_data = M_IMGDATA->m_data; unsigned char *target_data; if (horizontally) @@ -1125,7 +1274,7 @@ wxImage wxImage::Mirror( bool horizontally ) const source_data += 3*width; } - if (alpha != NULL) + if ( alpha ) { // src_alpha starts at the first pixel and increases by 1 width after each step // (a step here is the copy of the alpha channel of an entire line) @@ -1150,7 +1299,7 @@ wxImage wxImage::GetSubImage( const wxRect &rect ) const { wxImage image; - wxCHECK_MSG( Ok(), image, wxT("invalid image") ); + wxCHECK_MSG( IsOk(), image, wxT("invalid image") ); wxCHECK_MSG( (rect.GetLeft()>=0) && (rect.GetTop()>=0) && (rect.GetRight()<=GetWidth()) && (rect.GetBottom()<=GetHeight()), @@ -1168,7 +1317,7 @@ wxImage wxImage::GetSubImage( const wxRect &rect ) const wxCHECK_MSG( subdata, image, wxT("unable to create image") ); - if (src_alpha != NULL) { + if ( src_alpha ) { image.SetAlpha(); subalpha = image.GetAlpha(); wxCHECK_MSG( subalpha, image, wxT("unable to create alpha channel")); @@ -1203,7 +1352,7 @@ wxImage wxImage::Size( const wxSize& size, const wxPoint& pos, { wxImage image; - wxCHECK_MSG( Ok(), image, wxT("invalid image") ); + wxCHECK_MSG( IsOk(), image, wxT("invalid image") ); wxCHECK_MSG( (size.GetWidth() > 0) && (size.GetHeight() > 0), image, wxT("invalid size") ); int width = GetWidth(), height = GetHeight(); @@ -1220,21 +1369,30 @@ wxImage wxImage::Size( const wxSize& size, const wxPoint& pos, image.SetRGB(wxRect(), r, g, b); - wxRect subRect(pos.x, pos.y, width, height); - wxRect finalRect(0, 0, size.GetWidth(), size.GetHeight()); - if (pos.x < 0) - finalRect.width -= pos.x; - if (pos.y < 0) - finalRect.height -= pos.y; + // we have two coordinate systems: + // source: starting at 0,0 of source image + // destination starting at 0,0 of destination image + // Documentation says: + // "The image is pasted into a new image [...] at the position pos relative + // to the upper left of the new image." this means the transition rule is: + // "dest coord" = "source coord" + pos; - subRect.Intersect(finalRect); + // calculate the intersection using source coordinates: + wxRect srcRect(0, 0, width, height); + wxRect dstRect(-pos, size); - if (!subRect.IsEmpty()) + srcRect.Intersect(dstRect); + + if (!srcRect.IsEmpty()) { - if ((subRect.GetWidth() == width) && (subRect.GetHeight() == height)) - image.Paste(*this, pos.x, pos.y); + // insertion point is needed in destination coordinates. + // NB: it is not always "pos"! + wxPoint ptInsert = srcRect.GetTopLeft() + pos; + + if ((srcRect.GetWidth() == width) && (srcRect.GetHeight() == height)) + image.Paste(*this, ptInsert.x, ptInsert.y); else - image.Paste(GetSubImage(subRect), pos.x, pos.y); + image.Paste(GetSubImage(srcRect), ptInsert.x, ptInsert.y); } return image; @@ -1242,8 +1400,8 @@ wxImage wxImage::Size( const wxSize& size, const wxPoint& pos, void wxImage::Paste( const wxImage &image, int x, int y ) { - wxCHECK_RET( Ok(), wxT("invalid image") ); - wxCHECK_RET( image.Ok(), wxT("invalid image") ); + wxCHECK_RET( IsOk(), wxT("invalid image") ); + wxCHECK_RET( image.IsOk(), wxT("invalid image") ); AllocExclusive(); @@ -1271,17 +1429,20 @@ void wxImage::Paste( const wxImage &image, int x, int y ) if (width < 1) return; if (height < 1) return; - if ((!HasMask() && !image.HasMask()) || - (HasMask() && !image.HasMask()) || - ((HasMask() && image.HasMask() && + // If we can, copy the data using memcpy() as this is the fastest way. But + // for this the image being pasted must have "compatible" mask with this + // one meaning that either it must not have one at all or it must use the + // same masked colour. + if ( !image.HasMask() || + ((HasMask() && (GetMaskRed()==image.GetMaskRed()) && (GetMaskGreen()==image.GetMaskGreen()) && - (GetMaskBlue()==image.GetMaskBlue())))) + (GetMaskBlue()==image.GetMaskBlue()))) ) { - unsigned char* source_data = image.GetData() + xx*3 + yy*3*image.GetWidth(); + const unsigned char* source_data = image.GetData() + 3*(xx + yy*image.GetWidth()); int source_step = image.GetWidth()*3; - unsigned char* target_data = GetData() + (x+xx)*3 + (y+yy)*3*M_IMGDATA->m_width; + unsigned char* target_data = GetData() + 3*((x+xx) + (y+yy)*M_IMGDATA->m_width); int target_step = M_IMGDATA->m_width*3; for (int j = 0; j < height; j++) { @@ -1297,7 +1458,7 @@ void wxImage::Paste( const wxImage &image, int x, int y ) if ( !HasAlpha() ) InitAlpha(); - unsigned char* source_data = image.GetAlpha() + xx + yy*image.GetWidth(); + const unsigned char* source_data = image.GetAlpha() + xx + yy*image.GetWidth(); int source_step = image.GetWidth(); unsigned char* target_data = GetAlpha() + (x+xx) + (y+yy)*M_IMGDATA->m_width; @@ -1317,10 +1478,10 @@ void wxImage::Paste( const wxImage &image, int x, int y ) unsigned char g = image.GetMaskGreen(); unsigned char b = image.GetMaskBlue(); - unsigned char* source_data = image.GetData() + xx*3 + yy*3*image.GetWidth(); + const unsigned char* source_data = image.GetData() + 3*(xx + yy*image.GetWidth()); int source_step = image.GetWidth()*3; - unsigned char* target_data = GetData() + (x+xx)*3 + (y+yy)*3*M_IMGDATA->m_width; + unsigned char* target_data = GetData() + 3*((x+xx) + (y+yy)*M_IMGDATA->m_width); int target_step = M_IMGDATA->m_width*3; for (int j = 0; j < height; j++) @@ -1343,7 +1504,7 @@ void wxImage::Paste( const wxImage &image, int x, int y ) void wxImage::Replace( unsigned char r1, unsigned char g1, unsigned char b1, unsigned char r2, unsigned char g2, unsigned char b2 ) { - wxCHECK_RET( Ok(), wxT("invalid image") ); + wxCHECK_RET( IsOk(), wxT("invalid image") ); AllocExclusive(); @@ -1365,51 +1526,40 @@ void wxImage::Replace( unsigned char r1, unsigned char g1, unsigned char b1, } } -wxImage wxImage::ConvertToGreyscale( double lr, double lg, double lb ) const +wxImage wxImage::ConvertToGreyscale(void) const { - wxImage image; + return ConvertToGreyscale(0.299, 0.587, 0.114); +} - wxCHECK_MSG( Ok(), image, wxT("invalid image") ); +wxImage wxImage::ConvertToGreyscale(double weight_r, double weight_g, double weight_b) const +{ + wxImage image(MakeEmptyClone()); - image.Create(M_IMGDATA->m_width, M_IMGDATA->m_height, false); + wxCHECK( image.IsOk(), image ); + const unsigned char *src = M_IMGDATA->m_data; unsigned char *dest = image.GetData(); - wxCHECK_MSG( dest, image, wxT("unable to create image") ); - - unsigned char *src = M_IMGDATA->m_data; - bool hasMask = M_IMGDATA->m_hasMask; - unsigned char maskRed = M_IMGDATA->m_maskRed; - unsigned char maskGreen = M_IMGDATA->m_maskGreen; - unsigned char maskBlue = M_IMGDATA->m_maskBlue; - - if ( hasMask ) - image.SetMaskColour(maskRed, maskGreen, maskBlue); + const bool hasMask = M_IMGDATA->m_hasMask; + const unsigned char maskRed = M_IMGDATA->m_maskRed; + const unsigned char maskGreen = M_IMGDATA->m_maskGreen; + const unsigned char maskBlue = M_IMGDATA->m_maskBlue; const long size = M_IMGDATA->m_width * M_IMGDATA->m_height; for ( long i = 0; i < size; i++, src += 3, dest += 3 ) { - // don't modify the mask - if ( hasMask && src[0] == maskRed && src[1] == maskGreen && src[2] == maskBlue ) + memcpy(dest, src, 3); + // only modify non-masked pixels + if ( !hasMask || src[0] != maskRed || src[1] != maskGreen || src[2] != maskBlue ) { - memcpy(dest, src, 3); - } - else - { - // calculate the luma - double luma = (src[0] * lr + src[1] * lg + src[2] * lb) + 0.5; - dest[0] = dest[1] = dest[2] = static_cast(luma); + wxColour::MakeGrey(dest + 0, dest + 1, dest + 2, weight_r, weight_g, weight_b); } } // copy the alpha channel, if any - if (HasAlpha()) + if ( image.HasAlpha() ) { - const size_t alphaSize = GetWidth() * GetHeight(); - unsigned char *alpha = (unsigned char*)malloc(alphaSize); - memcpy(alpha, GetAlpha(), alphaSize); - image.InitAlpha(); - image.SetAlpha(alpha); + memcpy( image.GetAlpha(), GetAlpha(), GetWidth() * GetHeight() ); } return image; @@ -1419,7 +1569,7 @@ wxImage wxImage::ConvertToMono( unsigned char r, unsigned char g, unsigned char { wxImage image; - wxCHECK_MSG( Ok(), image, wxT("invalid image") ); + wxCHECK_MSG( IsOk(), image, wxT("invalid image") ); image.Create( M_IMGDATA->m_width, M_IMGDATA->m_height, false ); @@ -1443,25 +1593,53 @@ wxImage wxImage::ConvertToMono( unsigned char r, unsigned char g, unsigned char for ( long i = 0; i < size; i++, srcd += 3, tard += 3 ) { - if (srcd[0] == r && srcd[1] == g && srcd[2] == b) - tard[0] = tard[1] = tard[2] = 255; - else - tard[0] = tard[1] = tard[2] = 0; + bool on = (srcd[0] == r) && (srcd[1] == g) && (srcd[2] == b); + wxColourBase::MakeMono(tard + 0, tard + 1, tard + 2, on); } return image; } +wxImage wxImage::ConvertToDisabled(unsigned char brightness) const +{ + wxImage image = *this; + + unsigned char mr = image.GetMaskRed(); + unsigned char mg = image.GetMaskGreen(); + unsigned char mb = image.GetMaskBlue(); + + int width = image.GetWidth(); + int height = image.GetHeight(); + bool has_mask = image.HasMask(); + + for (int y = height-1; y >= 0; --y) + { + for (int x = width-1; x >= 0; --x) + { + unsigned char* data = image.GetData() + (y*(width*3))+(x*3); + unsigned char* r = data; + unsigned char* g = data+1; + unsigned char* b = data+2; + + if (has_mask && (*r == mr) && (*g == mg) && (*b == mb)) + continue; + + wxColour::MakeDisabled(r, g, b, brightness); + } + } + return image; +} + int wxImage::GetWidth() const { - wxCHECK_MSG( Ok(), 0, wxT("invalid image") ); + wxCHECK_MSG( IsOk(), 0, wxT("invalid image") ); return M_IMGDATA->m_width; } int wxImage::GetHeight() const { - wxCHECK_MSG( Ok(), 0, wxT("invalid image") ); + wxCHECK_MSG( IsOk(), 0, wxT("invalid image") ); return M_IMGDATA->m_height; } @@ -1485,7 +1663,7 @@ void wxImage::SetType(wxBitmapType type) long wxImage::XYToIndex(int x, int y) const { - if ( Ok() && + if ( IsOk() && x >= 0 && y >= 0 && x < M_IMGDATA->m_width && y < M_IMGDATA->m_height ) { @@ -1511,7 +1689,7 @@ void wxImage::SetRGB( int x, int y, unsigned char r, unsigned char g, unsigned c void wxImage::SetRGB( const wxRect& rect_, unsigned char r, unsigned char g, unsigned char b ) { - wxCHECK_RET( Ok(), wxT("invalid image") ); + wxCHECK_RET( IsOk(), wxT("invalid image") ); AllocExclusive(); @@ -1587,14 +1765,14 @@ bool wxImage::IsOk() const unsigned char *wxImage::GetData() const { - wxCHECK_MSG( Ok(), (unsigned char *)NULL, wxT("invalid image") ); + wxCHECK_MSG( IsOk(), (unsigned char *)NULL, wxT("invalid image") ); return M_IMGDATA->m_data; } void wxImage::SetData( unsigned char *data, bool static_data ) { - wxCHECK_RET( Ok(), wxT("invalid image") ); + wxCHECK_RET( IsOk(), wxT("invalid image") ); wxImageRefData *newRefData = new wxImageRefData(); @@ -1695,7 +1873,7 @@ wxImage::ConvertColourToAlpha(unsigned char r, unsigned char g, unsigned char b) void wxImage::SetAlpha( unsigned char *alpha, bool static_data ) { - wxCHECK_RET( Ok(), wxT("invalid image") ); + wxCHECK_RET( IsOk(), wxT("invalid image") ); AllocExclusive(); @@ -1713,7 +1891,7 @@ void wxImage::SetAlpha( unsigned char *alpha, bool static_data ) unsigned char *wxImage::GetAlpha() const { - wxCHECK_MSG( Ok(), (unsigned char *)NULL, wxT("invalid image") ); + wxCHECK_MSG( IsOk(), (unsigned char *)NULL, wxT("invalid image") ); return M_IMGDATA->m_alpha; } @@ -1754,13 +1932,24 @@ void wxImage::InitAlpha() } } +void wxImage::ClearAlpha() +{ + wxCHECK_RET( HasAlpha(), wxT("image already doesn't have an alpha channel") ); + + if ( !M_IMGDATA->m_staticAlpha ) + free( M_IMGDATA->m_alpha ); + + M_IMGDATA->m_alpha = NULL; +} + + // ---------------------------------------------------------------------------- // mask support // ---------------------------------------------------------------------------- void wxImage::SetMaskColour( unsigned char r, unsigned char g, unsigned char b ) { - wxCHECK_RET( Ok(), wxT("invalid image") ); + wxCHECK_RET( IsOk(), wxT("invalid image") ); AllocExclusive(); @@ -1772,7 +1961,7 @@ void wxImage::SetMaskColour( unsigned char r, unsigned char g, unsigned char b ) bool wxImage::GetOrFindMaskColour( unsigned char *r, unsigned char *g, unsigned char *b ) const { - wxCHECK_MSG( Ok(), false, wxT("invalid image") ); + wxCHECK_MSG( IsOk(), false, wxT("invalid image") ); if (M_IMGDATA->m_hasMask) { @@ -1790,28 +1979,28 @@ bool wxImage::GetOrFindMaskColour( unsigned char *r, unsigned char *g, unsigned unsigned char wxImage::GetMaskRed() const { - wxCHECK_MSG( Ok(), 0, wxT("invalid image") ); + wxCHECK_MSG( IsOk(), 0, wxT("invalid image") ); return M_IMGDATA->m_maskRed; } unsigned char wxImage::GetMaskGreen() const { - wxCHECK_MSG( Ok(), 0, wxT("invalid image") ); + wxCHECK_MSG( IsOk(), 0, wxT("invalid image") ); return M_IMGDATA->m_maskGreen; } unsigned char wxImage::GetMaskBlue() const { - wxCHECK_MSG( Ok(), 0, wxT("invalid image") ); + wxCHECK_MSG( IsOk(), 0, wxT("invalid image") ); return M_IMGDATA->m_maskBlue; } void wxImage::SetMask( bool mask ) { - wxCHECK_RET( Ok(), wxT("invalid image") ); + wxCHECK_RET( IsOk(), wxT("invalid image") ); AllocExclusive(); @@ -1820,7 +2009,7 @@ void wxImage::SetMask( bool mask ) bool wxImage::HasMask() const { - wxCHECK_MSG( Ok(), false, wxT("invalid image") ); + wxCHECK_MSG( IsOk(), false, wxT("invalid image") ); return M_IMGDATA->m_hasMask; } @@ -1906,7 +2095,7 @@ bool wxImage::SetMaskFromImage(const wxImage& mask, bool wxImage::ConvertAlphaToMask(unsigned char threshold) { if ( !HasAlpha() ) - return true; + return false; unsigned char mr, mg, mb; if ( !FindFirstUnusedColour(&mr, &mg, &mb) ) @@ -1915,17 +2104,16 @@ bool wxImage::ConvertAlphaToMask(unsigned char threshold) return false; } - ConvertAlphaToMask(mr, mg, mb, threshold); - return true; + return ConvertAlphaToMask(mr, mg, mb, threshold); } -void wxImage::ConvertAlphaToMask(unsigned char mr, +bool wxImage::ConvertAlphaToMask(unsigned char mr, unsigned char mg, unsigned char mb, unsigned char threshold) { if ( !HasAlpha() ) - return; + return false; AllocExclusive(); @@ -1956,6 +2144,8 @@ void wxImage::ConvertAlphaToMask(unsigned char mr, M_IMGDATA->m_alpha = NULL; M_IMGDATA->m_staticAlpha = false; + + return true; } // ---------------------------------------------------------------------------- @@ -1966,22 +2156,22 @@ void wxImage::ConvertAlphaToMask(unsigned char mr, bool wxImage::HasPalette() const { - if (!Ok()) + if (!IsOk()) return false; - return M_IMGDATA->m_palette.Ok(); + return M_IMGDATA->m_palette.IsOk(); } const wxPalette& wxImage::GetPalette() const { - wxCHECK_MSG( Ok(), wxNullPalette, wxT("invalid image") ); + wxCHECK_MSG( IsOk(), wxNullPalette, wxT("invalid image") ); return M_IMGDATA->m_palette; } void wxImage::SetPalette(const wxPalette& palette) { - wxCHECK_RET( Ok(), wxT("invalid image") ); + wxCHECK_RET( IsOk(), wxT("invalid image") ); AllocExclusive(); @@ -2045,26 +2235,118 @@ bool wxImage::HasOption(const wxString& name) const // image I/O // ---------------------------------------------------------------------------- -bool wxImage::LoadFile( const wxString& WXUNUSED_UNLESS_STREAMS(filename), - wxBitmapType WXUNUSED_UNLESS_STREAMS(type), - int WXUNUSED_UNLESS_STREAMS(index) ) +// Under Windows we can load wxImage not only from files but also from +// resources. +#if defined(__WINDOWS__) && wxUSE_WXDIB && wxUSE_IMAGE + #define HAS_LOAD_FROM_RESOURCE +#endif + +#ifdef HAS_LOAD_FROM_RESOURCE + +#include "wx/msw/dib.h" +#include "wx/msw/private.h" + +static wxImage LoadImageFromResource(const wxString &name, wxBitmapType type) { -#if HAS_FILE_STREAMS - if (wxFileExists(filename)) + AutoHBITMAP + hBitmap, + hMask; + + if ( type == wxBITMAP_TYPE_BMP_RESOURCE ) { - wxImageFileInputStream stream(filename); - wxBufferedInputStream bstream( stream ); - return LoadFile(bstream, type, index); + hBitmap.Init( ::LoadBitmap(wxGetInstance(), name.t_str()) ); + + if ( !hBitmap ) + { + wxLogError(_("Failed to load bitmap \"%s\" from resources."), name); + } + } + else if ( type == wxBITMAP_TYPE_ICO_RESOURCE ) + { + const HICON hIcon = ::LoadIcon(wxGetInstance(), name.t_str()); + + if ( !hIcon ) + { + wxLogError(_("Failed to load icon \"%s\" from resources."), name); + } + else + { + ICONINFO info; + if ( !::GetIconInfo(hIcon, &info) ) + { + wxLogLastError(wxT("GetIconInfo")); + return wxImage(); + } + + hBitmap.Init(info.hbmColor); + hMask.Init(info.hbmMask); + } + } + else if ( type == wxBITMAP_TYPE_CUR_RESOURCE ) + { + wxLogDebug(wxS("Loading cursors from resources is not implemented.")); } else { - wxLogError( _("Can't load image from file '%s': file does not exist."), filename.c_str() ); + wxFAIL_MSG(wxS("Invalid bitmap resource type.")); + } - return false; + if ( !hBitmap ) + return wxImage(); + + wxImage image = wxDIB(hBitmap).ConvertToImage(); + if ( hMask ) + { + const wxImage mask = wxDIB(hMask).ConvertToImage(); + image.SetMaskFromImage(mask, 255, 255, 255); } -#else // !HAS_FILE_STREAMS - return false; + else + { + // Light gray colour is a default mask + image.SetMaskColour(0xc0, 0xc0, 0xc0); + } + + // We could have already loaded alpha from the resources, but if not, + // initialize it now using the mask. + if ( !image.HasAlpha() ) + image.InitAlpha(); + + return image; +} + +#endif // HAS_LOAD_FROM_RESOURCE + +bool wxImage::LoadFile( const wxString& filename, + wxBitmapType type, + int WXUNUSED_UNLESS_STREAMS(index) ) +{ +#ifdef HAS_LOAD_FROM_RESOURCE + if ( type == wxBITMAP_TYPE_BMP_RESOURCE + || type == wxBITMAP_TYPE_ICO_RESOURCE + || type == wxBITMAP_TYPE_CUR_RESOURCE) + { + const wxImage image = ::LoadImageFromResource(filename, type); + if ( image.IsOk() ) + { + *this = image; + return true; + } + } +#endif // HAS_LOAD_FROM_RESOURCE + +#if HAS_FILE_STREAMS + wxImageFileInputStream stream(filename); + if ( stream.IsOk() ) + { + wxBufferedInputStream bstream( stream ); + if ( LoadFile(bstream, type, index) ) + return true; + } + + wxLogError(_("Failed to load image from file \"%s\"."), filename); #endif // HAS_FILE_STREAMS + + return false; } bool wxImage::LoadFile( const wxString& WXUNUSED_UNLESS_STREAMS(filename), @@ -2072,21 +2354,18 @@ bool wxImage::LoadFile( const wxString& WXUNUSED_UNLESS_STREAMS(filename), int WXUNUSED_UNLESS_STREAMS(index) ) { #if HAS_FILE_STREAMS - if (wxFileExists(filename)) + wxImageFileInputStream stream(filename); + if ( stream.IsOk() ) { - wxImageFileInputStream stream(filename); wxBufferedInputStream bstream( stream ); - return LoadFile(bstream, mimetype, index); + if ( LoadFile(bstream, mimetype, index) ) + return true; } - else - { - wxLogError( _("Can't load image from file '%s': file does not exist."), filename.c_str() ); - return false; - } -#else // !HAS_FILE_STREAMS - return false; + wxLogError(_("Failed to load image from file \"%s\"."), filename); #endif // HAS_FILE_STREAMS + + return false; } @@ -2109,7 +2388,7 @@ bool wxImage::SaveFile( const wxString& WXUNUSED_UNLESS_STREAMS(filename), wxBitmapType WXUNUSED_UNLESS_STREAMS(type) ) const { #if HAS_FILE_STREAMS - wxCHECK_MSG( Ok(), false, wxT("invalid image") ); + wxCHECK_MSG( IsOk(), false, wxT("invalid image") ); ((wxImage*)this)->SetOption(wxIMAGE_OPTION_FILENAME, filename); @@ -2129,7 +2408,7 @@ bool wxImage::SaveFile( const wxString& WXUNUSED_UNLESS_STREAMS(filename), const wxString& WXUNUSED_UNLESS_STREAMS(mimetype) ) const { #if HAS_FILE_STREAMS - wxCHECK_MSG( Ok(), false, wxT("invalid image") ); + wxCHECK_MSG( IsOk(), false, wxT("invalid image") ); ((wxImage*)this)->SetOption(wxIMAGE_OPTION_FILENAME, filename); @@ -2160,7 +2439,7 @@ int wxImage::GetImageCount( const wxString& WXUNUSED_UNLESS_STREAMS(name), { #if HAS_FILE_STREAMS wxImageFileInputStream stream(name); - if (stream.Ok()) + if (stream.IsOk()) return GetImageCount(stream, type); #endif @@ -2213,7 +2492,7 @@ int wxImage::GetImageCount( wxInputStream &stream, wxBitmapType type ) if ( !handler ) { - wxLogWarning(_("No image handler for type %ld defined."), type); + wxLogWarning(_("No image handler for type %d defined."), type); return false; } @@ -2223,7 +2502,7 @@ int wxImage::GetImageCount( wxInputStream &stream, wxBitmapType type ) } else { - wxLogError(_("Image file is not of type %ld."), type); + wxLogError(_("Image file is not of type %d."), type); return 0; } } @@ -2235,10 +2514,20 @@ bool wxImage::DoLoad(wxImageHandler& handler, wxInputStream& stream, int index) const unsigned maxWidth = GetOptionInt(wxIMAGE_OPTION_MAX_WIDTH), maxHeight = GetOptionInt(wxIMAGE_OPTION_MAX_HEIGHT); + // Preserve the original stream position if possible to rewind back to it + // if we failed to load the file -- maybe the next handler that we try can + // succeed after us then. + wxFileOffset posOld = wxInvalidOffset; + if ( stream.IsSeekable() ) + posOld = stream.TellI(); + if ( !handler.LoadFile(this, stream, true/*verbose*/, index) ) - return false; + { + if ( posOld != wxInvalidOffset ) + stream.SeekI(posOld); - M_IMGDATA->m_type = handler.GetType(); + return false; + } // rescale the image to the specified size if needed if ( maxWidth || maxHeight ) @@ -2257,9 +2546,22 @@ bool wxImage::DoLoad(wxImageHandler& handler, wxInputStream& stream, int index) } if ( width != widthOrig || height != heightOrig ) + { + // get the original size if it was set by the image handler + // but also in order to restore it after Rescale + int widthOrigOption = GetOptionInt(wxIMAGE_OPTION_ORIGINAL_WIDTH), + heightOrigOption = GetOptionInt(wxIMAGE_OPTION_ORIGINAL_HEIGHT); + Rescale(width, height, wxIMAGE_QUALITY_HIGH); + + SetOption(wxIMAGE_OPTION_ORIGINAL_WIDTH, widthOrigOption ? widthOrigOption : widthOrig); + SetOption(wxIMAGE_OPTION_ORIGINAL_HEIGHT, heightOrigOption ? heightOrigOption : heightOrig); + } } + // Set this after Rescale, which currently does not preserve it + M_IMGDATA->m_type = handler.GetType(); + return true; } @@ -2271,6 +2573,17 @@ bool wxImage::LoadFile( wxInputStream& stream, wxBitmapType type, int index ) if ( type == wxBITMAP_TYPE_ANY ) { + if ( !stream.IsSeekable() ) + { + // The error message about image data format being unknown below + // would be misleading in this case as we are not even going to try + // any handlers because CanRead() never does anything for not + // seekable stream, so try to be more precise here. + wxLogError(_("Can't automatically determine the image format " + "for non-seekable input.")); + return false; + } + const wxList& list = GetHandlers(); for ( wxList::compatibility_iterator node = list.GetFirst(); node; @@ -2281,7 +2594,7 @@ bool wxImage::LoadFile( wxInputStream& stream, wxBitmapType type, int index ) return true; } - wxLogWarning( _("No handler found for image type.") ); + wxLogWarning( _("Unknown image data format.") ); return false; } @@ -2290,13 +2603,13 @@ bool wxImage::LoadFile( wxInputStream& stream, wxBitmapType type, int index ) handler = FindHandler(type); if ( !handler ) { - wxLogWarning( _("No image handler for type %ld defined."), type ); + wxLogWarning( _("No image handler for type %d defined."), type ); return false; } if ( stream.IsSeekable() && !handler->CanRead(stream) ) { - wxLogError(_("Image file is not of type %ld."), type); + wxLogError(_("This is not a %s."), handler->GetName()); return false; } @@ -2319,7 +2632,7 @@ bool wxImage::LoadFile( wxInputStream& stream, const wxString& mimetype, int ind if ( stream.IsSeekable() && !handler->CanRead(stream) ) { - wxLogError(_("Image file is not of type %s."), mimetype); + wxLogError(_("Image is not of type %s."), mimetype); return false; } @@ -2338,7 +2651,7 @@ bool wxImage::DoSave(wxImageHandler& handler, wxOutputStream& stream) const bool wxImage::SaveFile( wxOutputStream& stream, wxBitmapType type ) const { - wxCHECK_MSG( Ok(), false, wxT("invalid image") ); + wxCHECK_MSG( IsOk(), false, wxT("invalid image") ); wxImageHandler *handler = FindHandler(type); if ( !handler ) @@ -2352,12 +2665,13 @@ bool wxImage::SaveFile( wxOutputStream& stream, wxBitmapType type ) const bool wxImage::SaveFile( wxOutputStream& stream, const wxString& mimetype ) const { - wxCHECK_MSG( Ok(), false, wxT("invalid image") ); + wxCHECK_MSG( IsOk(), false, wxT("invalid image") ); wxImageHandler *handler = FindHandlerMime(mimetype); if ( !handler ) { wxLogWarning( _("No image handler for type %s defined."), mimetype.GetData() ); + return false; } return DoSave(*handler, stream); @@ -2384,7 +2698,7 @@ void wxImage::AddHandler( wxImageHandler *handler ) // may) we should probably refcount the duplicates. // also an issue in InsertHandler below. - wxLogDebug( _T("Adding duplicate image handler for '%s'"), + wxLogDebug( wxT("Adding duplicate image handler for '%s'"), handler->GetName().c_str() ); delete handler; } @@ -2400,7 +2714,7 @@ void wxImage::InsertHandler( wxImageHandler *handler ) else { // see AddHandler for additional comments. - wxLogDebug( _T("Inserting duplicate image handler for '%s'"), + wxLogDebug( wxT("Inserting duplicate image handler for '%s'"), handler->GetName().c_str() ); delete handler; } @@ -2438,10 +2752,12 @@ wxImageHandler *wxImage::FindHandler( const wxString& extension, wxBitmapType bi while (node) { wxImageHandler *handler = (wxImageHandler*)node->GetData(); - if ( (handler->GetExtension().Cmp(extension) == 0) && - ( (bitmapType == wxBITMAP_TYPE_ANY) || (handler->GetType() == bitmapType)) ) + if ((bitmapType == wxBITMAP_TYPE_ANY) || (handler->GetType() == bitmapType)) { - return handler; + if (handler->GetExtension() == extension) + return handler; + if (handler->GetAltExtensions().Index(extension, false) != wxNOT_FOUND) + return handler; } node = node->GetNext(); } @@ -2503,6 +2819,8 @@ wxString wxImage::GetImageExtWildcard() { wxImageHandler* Handler = (wxImageHandler*)Node->GetData(); fmts += wxT("*.") + Handler->GetExtension(); + for (size_t i = 0; i < Handler->GetAltExtensions().size(); i++) + fmts += wxT(";*.") + Handler->GetAltExtensions()[i]; Node = Node->GetNext(); if ( Node ) fmts += wxT(";"); } @@ -2690,49 +3008,57 @@ void wxImage::RotateHue(double angle) IMPLEMENT_ABSTRACT_CLASS(wxImageHandler,wxObject) #if wxUSE_STREAMS -bool wxImageHandler::LoadFile( wxImage *WXUNUSED(image), wxInputStream& WXUNUSED(stream), bool WXUNUSED(verbose), int WXUNUSED(index) ) +int wxImageHandler::GetImageCount( wxInputStream& stream ) { - return false; -} + // NOTE: this code is the same of wxAnimationDecoder::CanRead and + // wxImageHandler::CallDoCanRead -bool wxImageHandler::SaveFile( wxImage *WXUNUSED(image), wxOutputStream& WXUNUSED(stream), bool WXUNUSED(verbose) ) -{ - return false; -} + if ( !stream.IsSeekable() ) + return false; // can't test unseekable stream -int wxImageHandler::GetImageCount( wxInputStream& WXUNUSED(stream) ) -{ - return 1; + wxFileOffset posOld = stream.TellI(); + int n = DoGetImageCount(stream); + + // restore the old position to be able to test other formats and so on + if ( stream.SeekI(posOld) == wxInvalidOffset ) + { + wxLogDebug(wxT("Failed to rewind the stream in wxImageHandler!")); + + // reading would fail anyhow as we're not at the right position + return false; + } + + return n; } bool wxImageHandler::CanRead( const wxString& name ) { - if (wxFileExists(name)) + wxImageFileInputStream stream(name); + if ( !stream.IsOk() ) { - wxImageFileInputStream stream(name); - return CanRead(stream); - } + wxLogError(_("Failed to check format of image file \"%s\"."), name); - wxLogError( _("Can't check image format of file '%s': file does not exist."), name.c_str() ); + return false; + } - return false; + return CanRead(stream); } bool wxImageHandler::CallDoCanRead(wxInputStream& stream) { - wxFileOffset posOld = stream.TellI(); - if ( posOld == wxInvalidOffset ) - { - // can't test unseekable stream - return false; - } + // NOTE: this code is the same of wxAnimationDecoder::CanRead and + // wxImageHandler::GetImageCount + + if ( !stream.IsSeekable() ) + return false; // can't test unseekable stream + wxFileOffset posOld = stream.TellI(); bool ok = DoCanRead(stream); // restore the old position to be able to test other formats and so on if ( stream.SeekI(posOld) == wxInvalidOffset ) { - wxLogDebug(_T("Failed to rewind the stream in wxImageHandler!")); + wxLogDebug(wxT("Failed to rewind the stream in wxImageHandler!")); // reading would fail anyhow as we're not at the right position return false; @@ -2747,7 +3073,7 @@ bool wxImageHandler::CallDoCanRead(wxInputStream& stream) wxImageResolution wxImageHandler::GetResolutionFromOptions(const wxImage& image, int *x, int *y) { - wxCHECK_MSG( x && y, wxIMAGE_RESOLUTION_NONE, _T("NULL pointer") ); + wxCHECK_MSG( x && y, wxIMAGE_RESOLUTION_NONE, wxT("NULL pointer") ); if ( image.HasOption(wxIMAGE_OPTION_RESOLUTIONX) && image.HasOption(wxIMAGE_OPTION_RESOLUTIONY) )