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( Ok(), 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;
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)
{
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] ;
wxCHECK_MSG( data, image, wxT("unable to create image") );
- 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 )
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 ;
+ 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++ )
{
- unsigned char* src_pixel = &src_line[(x>>16)*3];
- unsigned char* src_alpha_pixel = source_alpha ? &src_alpha_line[(x>>16)] : 0 ;
+ 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];
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;
{
// This function implements a Bilinear algorithm for resampling.
wxImage ret_image(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;
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
+ // 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
+ // 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
+ // result lines
dst_data[0] = static_cast<unsigned char>(r1 * dy1 + r2 * dy);
dst_data[1] = static_cast<unsigned char>(g1 * dy1 + g2 * dy);
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;
// 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.Ok(), 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;
// 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.Ok(), 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;
wxImage wxImage::Rotate90( bool clockwise ) const
{
- wxImage image;
-
- wxCHECK_MSG( Ok(), image, wxT("invalid image") );
-
- image.Create( M_IMGDATA->m_height, M_IMGDATA->m_width, 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;
- unsigned char *alpha_data = 0 ;
- unsigned char *source_alpha = M_IMGDATA->m_alpha;
- unsigned char *target_alpha = 0 ;
+ wxImage image(MakeEmptyClone(Clone_SwapOrientation));
- if ( source_alpha )
- {
- image.SetAlpha();
- alpha_data = image.GetAlpha();
- wxCHECK_MSG( alpha_data, image, 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 );
+ wxCHECK( image.Ok(), image );
long height = M_IMGDATA->m_height;
long width = M_IMGDATA->m_width;
clockwise ? height - 1 - hot_y : hot_y);
}
+ unsigned char *data = image.GetData();
+ const unsigned char *source_data = M_IMGDATA->m_data;
+ unsigned char *target_data;
+ unsigned char *alpha_data = image.GetAlpha();
+ const unsigned char *source_alpha = M_IMGDATA->m_alpha;
+ unsigned char *target_alpha = 0 ;
+
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)
+ 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)
+ if (source_alpha)
target_alpha = alpha_data + ((height*(width-1)) + j - (i*height));
}
memcpy( target_data, source_data, 3 );
source_data += 3;
- if(source_alpha)
+ if (source_alpha)
{
memcpy( target_alpha, source_alpha, 1 );
source_alpha += 1;
return image;
}
-wxImage wxImage::Mirror( bool horizontally ) const
+wxImage wxImage::Rotate180() const
{
- wxImage image;
+ wxImage image(MakeEmptyClone());
- wxCHECK_MSG( Ok(), image, wxT("invalid image") );
+ wxCHECK( image.Ok(), image );
- image.Create( M_IMGDATA->m_width, M_IMGDATA->m_height, false );
+ 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 = NULL;
+ unsigned char *alpha = image.GetAlpha();
+ const unsigned char *source_data = M_IMGDATA->m_data;
+ unsigned char *target_data = data + width * height * 3;
- wxCHECK_MSG( data, image, wxT("unable to create image") );
+ for (long j = 0; j < height; j++)
+ {
+ for (long i = 0; i < width; i++)
+ {
+ target_data -= 3;
+ memcpy( target_data, source_data, 3 );
+ source_data += 3;
+ }
+ }
- if (M_IMGDATA->m_alpha != NULL) {
- image.SetAlpha();
- alpha = image.GetAlpha();
- wxCHECK_MSG( alpha, image, wxT("unable to create alpha channel") );
+ 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)
+ {
+ *(--dest_alpha) = *(src_alpha++);
+ }
+ }
}
- if (M_IMGDATA->m_hasMask)
- image.SetMaskColour( M_IMGDATA->m_maskRed, M_IMGDATA->m_maskGreen, M_IMGDATA->m_maskBlue );
+ return image;
+}
+
+wxImage wxImage::Mirror( bool horizontally ) const
+{
+ wxImage image(MakeEmptyClone());
+
+ wxCHECK( image.Ok(), 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)
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)
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"));
(GetMaskGreen()==image.GetMaskGreen()) &&
(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++)
{
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;
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++)
wxImage wxImage::ConvertToGreyscale(double weight_r, double weight_g, double weight_b) const
{
- wxImage image;
+ wxImage image(MakeEmptyClone());
- wxCHECK_MSG( Ok(), image, wxT("invalid image") );
-
- image.Create(M_IMGDATA->m_width, M_IMGDATA->m_height, false);
+ wxCHECK( image.Ok(), 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 )
{
memcpy(dest, src, 3);
- // don't modify the mask
- if ( hasMask && src[0] == maskRed && src[1] == maskGreen && src[2] == maskBlue )
- {
- }
- else
+ // only modify non-masked pixels
+ if ( !hasMask || src[0] != maskRed || src[1] != maskGreen || src[2] != maskBlue )
{
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;
projects / wxWidgets.git / blobdiff