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image::paste throws exception if graphics or image is empty

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This commit is contained in:
Jinhao 2015-07-13 00:23:54 +08:00
parent 17556cae99
commit 1eb76307e4
15 changed files with 59 additions and 642 deletions
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2
include/nana/gui/detail/effects_renderer.hpp
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@ -170,7 +170,7 @@ namespace nana{
pixbuf.pixel(0, r.height - 1, px2);
pixbuf.pixel(r.width - 1, r.height - 1, px3);
pixbuf.paste(wd->root, r.x, r.y);
pixbuf.paste(wd->root, { r.x, r.y });
std::vector<typename window_layer::wd_rectangle> overlaps;
if(window_layer::read_overlaps(wd, visual, overlaps))

2
include/nana/gui/widgets/skeletons/text_token_stream.hpp
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@ -576,7 +576,7 @@ namespace nana{ namespace widgets{ namespace skeletons
if(size_ != image_.size())
image_.stretch(::nana::rectangle{ image_.size() }, graph, nana::rectangle(x, y, size_.width, size_.height));
else
image_.paste(graph, x, y);
image_.paste(graph, point{ x, y });
}
virtual const nana::size & size() const override

371
include/nana/paint/detail/image_bmp.hpp
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@ -1,371 +0,0 @@
/*
* Bitmap Format Graphics Implementation
* Nana C++ Library(http://www.nanapro.org)
* Copyright(C) 2003-2015 Jinhao(cnjinhao@hotmail.com)
*
* Distributed under the Boost Software License, Version 1.0.
* (See accompanying file LICENSE_1_0.txt or copy at
* http://www.boost.org/LICENSE_1_0.txt)
*
* @file: nana/paint/detail/image_bmp.hpp
* @contributors: Ryan Gonzalez
*/
#ifndef NANA_PAINT_DETAIL_IMAGE_BMP_HPP
#define NANA_PAINT_DETAIL_IMAGE_BMP_HPP
#include "image_impl_interface.hpp"
#include <memory>
namespace nana{ namespace paint
{
namespace detail
{
#ifndef NANA_WINDOWS
struct bitmap_file_header
{
unsigned short bfType;
unsigned long bfSize;
unsigned short bfReserved1;
unsigned short bfReserved2;
unsigned long bfOffBits;
} __attribute__((packed));
struct bitmap_info_header {
unsigned long biSize;
long biWidth;
long biHeight;
unsigned short biPlanes;
unsigned short biBitCount;
unsigned long biCompression;
unsigned long biSizeImage;
long biXPelsPerMeter;
long biYPelsPerMeter;
unsigned long biClrUsed;
unsigned long biClrImportant;
}__attribute__((packed));
struct rgb_quad
{
unsigned char rgbBlue;
unsigned char rgbGreen;
unsigned char rgbRed;
unsigned char rgbReserved;
};
struct bitmap_info
{
bitmap_info_header bmiHeader;
rgb_quad bmiColors[1];
}__attribute__((packed));
#else
typedef BITMAPFILEHEADER bitmap_file_header;
typedef BITMAPINFO bitmap_info;
typedef RGBQUAD rgb_quad;
#endif
class image_bmp
:public image::image_impl_interface
{
public:
image_bmp(){}
~image_bmp()
{
this->close();
}
bool open(const nana::char_t* filename)
{
if(nullptr == filename) return false;
std::ifstream ifs;
#if defined(NANA_UNICODE)
ifs.open(static_cast<std::string>(nana::charset(filename)).c_str(), std::ios::binary);
#else
ifs.open(filename, std::ios::binary);
#endif
if(ifs)
{
ifs.seekg(0, std::ios::end);
auto size = ifs.tellg();
ifs.seekg(0, std::ios::beg);
if(size <= static_cast<int>(sizeof(bitmap_file_header)))
return false;
std::unique_ptr<char[]> buffer(new char[static_cast<int>(size)]);
ifs.read(buffer.get(), size);
if(size == ifs.gcount())
{
bitmap_file_header * header = reinterpret_cast<bitmap_file_header*>(buffer.get());
if((header->bfType == 0x4D42) && (static_cast<std::streamsize>(header->bfSize) == size))
{
unsigned char* bits = reinterpret_cast<unsigned char*>(buffer.get() + header->bfOffBits);
bitmap_info * info = reinterpret_cast<bitmap_info *>(header + 1);
//Bitmap file is 4byte-aligned for each line.
std::size_t bytes_per_line;
const std::size_t height_pixels = std::abs(info->bmiHeader.biHeight);
if(0 == info->bmiHeader.biSizeImage)
bytes_per_line = (((info->bmiHeader.biWidth * info->bmiHeader.biBitCount + 31) & ~31) >> 3);
else
bytes_per_line = info->bmiHeader.biSizeImage / height_pixels;
pixbuf_.open(info->bmiHeader.biWidth, height_pixels);
auto d = pixbuf_.raw_ptr(0);
if(16 <= info->bmiHeader.biBitCount)
{
pixbuf_.put(bits, info->bmiHeader.biWidth, height_pixels, info->bmiHeader.biBitCount, bytes_per_line, (info->bmiHeader.biHeight < 0));
}
else if(8 == info->bmiHeader.biBitCount)
{
const auto lend = d + info->bmiHeader.biWidth * height_pixels;
if(info->bmiHeader.biHeight < 0)
{
auto s = bits;
while(d < lend)
{
auto d_p = d;
auto dpend = d_p + info->bmiHeader.biWidth;
auto s_p = s;
while(d_p != dpend)
{
rgb_quad & rgb = info->bmiColors[*s_p++];
d_p->element.red = rgb.rgbRed;
d_p->element.green = rgb.rgbGreen;
d_p->element.blue = rgb.rgbBlue;
d_p->element.alpha_channel = rgb.rgbReserved;
++d_p;
}
d = dpend;
s += bytes_per_line;
}
}
else
{
const auto* s = bits + bytes_per_line * (height_pixels - 1);
while(d < lend)
{
auto d_p = d;
auto* const dpend = d_p + info->bmiHeader.biWidth;
const auto * s_p = s;
while(d_p != dpend)
{
rgb_quad & rgb = info->bmiColors[*s_p++];
d_p->element.red = rgb.rgbRed;
d_p->element.green = rgb.rgbGreen;
d_p->element.blue = rgb.rgbBlue;
d_p->element.alpha_channel = rgb.rgbReserved;
++d_p;
}
d = dpend;
s -= bytes_per_line;
}
}
}
else if(4 == info->bmiHeader.biBitCount)
{
const auto * const lend = d + info->bmiHeader.biWidth * height_pixels;
if(info->bmiHeader.biHeight < 0)
{
const unsigned char* s = bits;
while(d < lend)
{
auto d_p = d;
auto * const dpend = d_p + info->bmiHeader.biWidth;
unsigned index = 0;
while(d_p != dpend)
{
rgb_quad & rgb = info->bmiColors[(index & 1) ? (s[index >> 1] & 0xF) : (s[index >> 1] & 0xF0) >> 4];
d_p->element.red = rgb.rgbRed;
d_p->element.green = rgb.rgbGreen;
d_p->element.blue = rgb.rgbBlue;
d_p->element.alpha_channel = rgb.rgbReserved;
++d_p;
++index;
}
d = dpend;
s += bytes_per_line;
}
}
else
{
const auto* s = bits + bytes_per_line * (height_pixels - 1);
while(d < lend)
{
auto d_p = d;
auto * const dpend = d_p + info->bmiHeader.biWidth;
unsigned index = 0;
while(d_p != dpend)
{
rgb_quad & rgb = info->bmiColors[(index & 1) ? (s[index >> 1] & 0xF) : (s[index >> 1] & 0xF0) >> 4];
d_p->element.red = rgb.rgbRed;
d_p->element.green = rgb.rgbGreen;
d_p->element.blue = rgb.rgbBlue;
d_p->element.alpha_channel = rgb.rgbReserved;
++d_p;
++index;
}
d = dpend;
s -= bytes_per_line;
}
}
}
else if(2 == info->bmiHeader.biBitCount)
{
const auto * const lend = d + info->bmiHeader.biWidth * height_pixels;
if(info->bmiHeader.biHeight < 0)
{
const unsigned char* s = bits;
while(d < lend)
{
auto d_p = d;
auto * const dpend = d_p + info->bmiHeader.biWidth;
unsigned index = 0;
while(d_p != dpend)
{
unsigned shift = (3 - (index & 0x3)) << 1; // (index % 4) * 2
rgb_quad& rgb = info->bmiColors[(s[index >> 2] & (0x3 << shift))>>shift];
d_p->element.red = rgb.rgbRed;
d_p->element.green = rgb.rgbGreen;
d_p->element.blue = rgb.rgbBlue;
d_p->element.alpha_channel = rgb.rgbReserved;
++d_p;
++index;
}
d = dpend;
s += bytes_per_line;
}
}
else
{
const auto* s = bits + bytes_per_line * (height_pixels - 1);
while(d < lend)
{
auto d_p = d;
auto * const dpend = d_p + info->bmiHeader.biWidth;
unsigned index = 0;
while(d_p != dpend)
{
unsigned shift = (3 - (index & 0x3)) << 1; // (index % 4) * 2
rgb_quad& rgb = info->bmiColors[(s[index >> 2] & (0x3 << shift))>>shift];
d_p->element.red = rgb.rgbRed;
d_p->element.green = rgb.rgbGreen;
d_p->element.blue = rgb.rgbBlue;
d_p->element.alpha_channel = rgb.rgbReserved;
++d_p;
++index;
}
d = dpend;
s -= bytes_per_line;
}
}
}
else if(1 == info->bmiHeader.biBitCount)
{
const auto * const lend = d + info->bmiHeader.biWidth * height_pixels;
if(info->bmiHeader.biHeight < 0)
{
const auto* s = bits;
while(d < lend)
{
auto d_p = d;
auto * const dpend = d_p + info->bmiHeader.biWidth;
unsigned index = 0;
while(d_p != dpend)
{
unsigned bi = (7 - (index & 7)); //(index % 8)
rgb_quad & rgb = info->bmiColors[(s[index >> 3] & (1 << bi)) >> bi];
d_p->element.red = rgb.rgbRed;
d_p->element.green = rgb.rgbGreen;
d_p->element.blue = rgb.rgbBlue;
d_p->element.alpha_channel = rgb.rgbReserved;
++d_p;
++index;
}
d = dpend;
s += bytes_per_line;
}
}
else
{
const auto* s = bits + bytes_per_line * (height_pixels - 1);
while(d < lend)
{
auto d_p = d;
auto * const dpend = d_p + info->bmiHeader.biWidth;
unsigned index = 0;
while(d_p != dpend)
{
unsigned bi = (7 - (index & 7));
rgb_quad & rgb = info->bmiColors[(s[index >> 3] & (1 << bi)) >> bi];
d_p->element.red = rgb.rgbRed;
d_p->element.green = rgb.rgbGreen;
d_p->element.blue = rgb.rgbBlue;
d_p->element.alpha_channel = rgb.rgbReserved;
++d_p;
++index;
}
d = dpend;
s -= bytes_per_line;
}
}
}
}
}
}
return (false == pixbuf_.empty());
}
bool alpha_channel() const
{
return false;
}
bool empty() const
{
return pixbuf_.empty();
}
void close()
{
pixbuf_.close();
}
nana::size size() const
{
return pixbuf_.size();
}
void paste(const nana::rectangle& src_r, graph_reference graph, int x, int y) const
{
if(graph && pixbuf_)
pixbuf_.paste(src_r, graph.handle(), x, y);
}
void stretch(const nana::rectangle& src_r, graph_reference graph, const nana::rectangle& r) const
{
if(graph && pixbuf_)
pixbuf_.stretch(src_r, graph.handle(), r);
}
private:
nana::paint::pixel_buffer pixbuf_;
};//end class bmpfile
}//end namespace detail
}//end namespace paint
}//end namespace nana
#endif

43
include/nana/paint/detail/image_ico.hpp
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@ -1,43 +0,0 @@
#ifndef NANA_PAINT_DETAIL_IMAGE_ICO_HPP
#define NANA_PAINT_DETAIL_IMAGE_ICO_HPP
#include "image_impl_interface.hpp"
namespace nana{ namespace paint
{
namespace detail
{
class image_ico
:public image::image_impl_interface
{
#if defined(NANA_WINDOWS)
struct handle_deleter
{
void operator()(HICON* handle) const;
};//end struct handle_deleter
typedef std::shared_ptr<HICON> ptr_t;
#else
typedef std::shared_ptr<int*> ptr_t;
#endif
public:
image_ico(bool is_ico);
bool open(const nana::char_t* filename);
bool alpha_channel() const;
bool empty() const;
void close();
nana::size size() const;
virtual void paste(const nana::rectangle& src_r, graph_reference graph, int x, int y) const;
virtual void stretch(const nana::rectangle&, graph_reference graph, const nana::rectangle& r) const;
const ptr_t & ptr() const;
private:
const bool is_ico_;
nana::size size_;
ptr_t ptr_;
};//end class image_ico
}
}//end namespace paint
}//end namespace nana
#endif

2
include/nana/paint/detail/image_impl_interface.hpp
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@ -20,7 +20,7 @@ namespace nana{ namespace paint{
virtual bool empty() const = 0;
virtual void close() = 0;
virtual nana::size size() const = 0;
virtual void paste(const nana::rectangle& src_r, graph_reference dst, int x, int y) const = 0;
virtual void paste(const nana::rectangle& src_r, graph_reference dst, const point& p_dst) const = 0;
virtual void stretch(const nana::rectangle& src_r, graph_reference dst, const nana::rectangle& r) const = 0;
};//end class image::image_impl_interface
}//end namespace paint

188
include/nana/paint/detail/image_png.hpp
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@ -1,188 +0,0 @@
#ifndef NANA_PAINT_DETAIL_IMAGE_PNG_HPP
#define NANA_PAINT_DETAIL_IMAGE_PNG_HPP
#include "image_impl_interface.hpp"
//Separate the libpng from the package that system provides.
#if defined(NANA_LIBPNG)
#include <nana/extrlib/png.h>
#else
#include <png.h>
#endif
#include <stdio.h>
#include "../pixel_buffer.hpp"
namespace nana
{
namespace paint{ namespace detail{
class image_png
: public image::image_impl_interface
{
public:
image_png()
{
}
bool open(const nana::char_t* png_file)
{
#ifdef NANA_UNICODE
FILE * fp = ::fopen(static_cast<std::string>(nana::charset(png_file)).c_str(), "rb");
#else
FILE* fp = ::fopen(png_file, "rb");
#endif
if(nullptr == fp) return false;
bool is_opened = false;
png_byte png_sig[8];
::fread(png_sig, 1, 8, fp);
//Test whether the file is a png.
if(0 == png_sig_cmp(png_sig, 0, 8))
{
png_structp png_ptr = ::png_create_read_struct(PNG_LIBPNG_VER_STRING, 0, 0, 0);
if(png_ptr)
{
png_infop info_ptr = ::png_create_info_struct(png_ptr);
if(info_ptr)
{
if(!setjmp(png_jmpbuf(png_ptr)))
{
//The following codes may longjmp while init_io error.
::png_init_io(png_ptr, fp);
::png_set_sig_bytes(png_ptr, 8);
::png_read_info(png_ptr, info_ptr);
const int png_width = ::png_get_image_width(png_ptr, info_ptr);
const int png_height = ::png_get_image_height(png_ptr, info_ptr);
png_byte color_type = ::png_get_color_type(png_ptr, info_ptr);
::png_set_interlace_handling(png_ptr);
::png_read_update_info(png_ptr, info_ptr);
//The following codes may longjmp while image_read error.
png_bytep * row_ptrs = new png_bytep[png_height];
const std::size_t png_rowbytes = ::png_get_rowbytes(png_ptr, info_ptr);
pixbuf_.open(png_width, png_height);
const bool is_alpha_enabled = ((PNG_COLOR_MASK_ALPHA & color_type) != 0);
pixbuf_.alpha_channel(is_alpha_enabled);
if(is_alpha_enabled && (png_rowbytes == png_width * sizeof(pixel_argb_t)))
{
for(int i = 0; i < png_height; ++i)
row_ptrs[i] = reinterpret_cast<png_bytep>(pixbuf_.raw_ptr(i));
::png_read_image(png_ptr, row_ptrs);
::png_destroy_read_struct(&png_ptr, &info_ptr, nullptr);
for (int i = 0; i < png_height; ++i)
{
auto p = pixbuf_.raw_ptr(i);
for (int u = 0; u < png_width; ++u)
{
auto t = p[u].element.red;
p[u].element.red = p[u].element.blue;
p[u].element.blue = t;
}
}
}
else
{
png_byte * png_pixbuf = new png_byte[png_height * png_rowbytes];
for(int i = 0; i < png_height; ++i)
row_ptrs[i] = reinterpret_cast<png_bytep>(png_pixbuf + png_rowbytes * i);
::png_read_image(png_ptr, row_ptrs);
::png_destroy_read_struct(&png_ptr, &info_ptr, 0);
std::size_t png_pixel_bytes = png_rowbytes / png_width;
pixel_argb_t * rgb_row_ptr = pixbuf_.raw_ptr(0);
for(int y = 0; y < png_height; ++y)
{
png_bytep png_ptr = row_ptrs[y];
pixel_argb_t * rgb_end = rgb_row_ptr + png_width;
if(is_alpha_enabled)
{
for(pixel_argb_t * i = rgb_row_ptr; i < rgb_end; ++i)
{
i->element.red = png_ptr[0];
i->element.green = png_ptr[1];
i->element.blue = png_ptr[2];
i->element.alpha_channel = png_ptr[3];
png_ptr += png_pixel_bytes;
}
}
else
{
for(pixel_argb_t * i = rgb_row_ptr; i < rgb_end; ++i)
{
i->element.red = png_ptr[0];
i->element.green = png_ptr[1];
i->element.blue = png_ptr[2];
i->element.alpha_channel = 255;
png_ptr += png_pixel_bytes;
}
}
rgb_row_ptr = rgb_end;
}
delete [] png_pixbuf;
}
delete [] row_ptrs;
is_opened = true;
}
}
}
}
::fclose(fp);
return is_opened;
}
bool alpha_channel() const
{
return pixbuf_.alpha_channel();
}
virtual bool empty() const
{
return pixbuf_.empty();
}
virtual void close()
{
pixbuf_.close();
}
virtual nana::size size() const
{
return pixbuf_.size();
}
void paste(const nana::rectangle& src_r, graph_reference graph, int x, int y) const
{
pixbuf_.paste(src_r, graph.handle(), x, y);
}
void stretch(const nana::rectangle& src_r, graph_reference dst, const nana::rectangle& r) const
{
pixbuf_.stretch(src_r, dst.handle(), r);
}
private:
nana::paint::pixel_buffer pixbuf_;
};
}//end namespace detail
}//end namespace paint
}//end namespace nana
#endif

2
include/nana/paint/image.hpp
View File

@ -43,7 +43,7 @@ namespace paint
bool alpha() const;
nana::size size() const;
void paste(graphics& dst, int x, int y) const;
void paste(graphics& dst, const point& p_dst) const;
void paste(const nana::rectangle& r_src, graphics& dst, const point& p_dst) const;///< Paste the area of picture specified by r_src into the destination graphics specified by dst at position p_dst.
void stretch(const nana::rectangle& r_src, graphics& dst, const nana::rectangle& r_dst) const;///<Paste the picture into the dst, stretching or compressing the picture to fit the given area.
private:

6
include/nana/paint/pixel_buffer.hpp
View File

@ -76,9 +76,9 @@ namespace nana{ namespace paint
pixel_color_t pixel(int x, int y) const;
void pixel(int x, int y, pixel_color_t);
void paste(drawable_type, int x, int y) const;
void paste(const nana::rectangle& s_r, drawable_type, int x, int y) const;
void paste(native_window_type, int x, int y) const;
void paste(drawable_type, const point& p_dst) const;
void paste(const nana::rectangle& s_r, drawable_type, const point& p_dst) const;
void paste(native_window_type, const point& p_dst) const;
void stretch(const std::string& name);
void stretch(const nana::rectangle& s_r, drawable_type, const nana::rectangle& r) const;
void blend(const std::string& name);

4
source/gui/animation.cpp
View File

@ -201,7 +201,7 @@ namespace nana
case frame::kind::oneshot:
_m_render(outs, [&frmobj](paint::graphics& tar, const nana::point& pos)
{
frmobj.u.oneshot->paste(tar, pos.x, pos.y);
frmobj.u.oneshot->paste(tar, pos);
});
break;
case frame::kind::framebuilder:
@ -230,7 +230,7 @@ namespace nana
switch(frmobj.type)
{
case frame::kind::oneshot:
frmobj.u.oneshot->paste(graph, pos.x, pos.y);
frmobj.u.oneshot->paste(graph, pos);
break;
case frame::kind::framebuilder:
if(rebuild_frame)

2
source/gui/widgets/button.cpp
View File

@ -258,7 +258,7 @@ namespace nana{ namespace drawerbase
}
if(attr_.icon)
attr_.icon->paste(graph, 3, (gsize.height - icon_sz.height) / 2);
attr_.icon->paste(graph, point{ 3, static_cast<int>(gsize.height - icon_sz.height) / 2 });
}
void trigger::_m_draw(graph_reference graph)

2
source/gui/widgets/treebox.cpp
View File

@ -1263,7 +1263,7 @@ namespace nana
img->stretch(::nana::rectangle{ size }, graph, attr.area);
}
else
img->paste(graph, attr.area.x + static_cast<int>(attr.area.width - size.width) / 2, attr.area.y + static_cast<int>(attr.area.height - size.height) / 2);
img->paste(graph, point{ attr.area.x + static_cast<int>(attr.area.width - size.width) / 2, attr.area.y + static_cast<int>(attr.area.height - size.height) / 2 });
}
}
}

2
source/paint/detail/native_paint_interface.cpp
View File

@ -126,7 +126,7 @@ namespace detail
i->value = (px_r | px_g | px_b);
}
}
pixbuf.paste(nana::rectangle(r.x, 0, r.width, r.height), dw, r.x, r.y);
pixbuf.paste(nana::rectangle(r.x, 0, r.width, r.height), dw, point{r.x, r.y});
}
nana::size raw_text_extent_size(drawable_type dw, const nana::char_t* text, std::size_t len)

6
source/paint/graphics.cpp
View File

@ -618,7 +618,7 @@ namespace paint
{
pixel_buffer pixbuf(handle_, 0, 0);
pixbuf.blur(r, radius);
pixbuf.paste(handle_, 0, 0);
pixbuf.paste(handle_, point{});
}
}
@ -677,7 +677,7 @@ namespace paint
}
delete [] tablebuf;
pixbuf.paste(handle_, 0, 0);
pixbuf.paste(handle_, point{});
if(changed_ == false) changed_ = true;
}
}
@ -1074,7 +1074,7 @@ namespace paint
if (pxbuf_.open(handle_))
{
pxbuf_.gradual_rectangle(rct, from, to, 0.0, vertical);
pxbuf_.paste(handle_, 0, 0);
pxbuf_.paste(handle_, point{});
}
#elif defined(NANA_X11)
if (nullptr == handle_) return;

41
source/paint/image.cpp
View File

@ -16,14 +16,15 @@
#include <algorithm>
#include <fstream>
#include <iterator>
#include <stdexcept>
#include <nana/paint/detail/image_impl_interface.hpp>
#include <nana/paint/pixel_buffer.hpp>
#if defined(NANA_ENABLE_PNG)
#include <nana/paint/detail/image_png.hpp>
#include "detail/image_png.hpp"
#endif
#include <nana/paint/detail/image_bmp.hpp>
#include <nana/paint/detail/image_ico.hpp>
#include "detail/image_bmp.hpp"
#include "detail/image_ico.hpp"
namespace nana
{
@ -89,12 +90,12 @@ namespace paint
return size_;
}
void image_ico::paste(const nana::rectangle& src_r, graph_reference graph, int x, int y) const
void image_ico::paste(const nana::rectangle& src_r, graph_reference graph, const point& p_dst) const
{
if(ptr_ && (graph.empty() == false))
{
#if defined(NANA_WINDOWS)
::DrawIconEx(graph.handle()->context, x, y, *ptr_, src_r.width, src_r.height, 0, 0, DI_NORMAL);
::DrawIconEx(graph.handle()->context, p_dst.x, p_dst.y, *ptr_, src_r.width, src_r.height, 0, 0, DI_NORMAL);
#endif
}
}
@ -260,22 +261,40 @@ namespace paint
return (image_ptr_ ? image_ptr_->size() : nana::size());
}
void image::paste(graphics& dst, int x, int y) const
void image::paste(graphics& dst, const point& p_dst) const
{
if(image_ptr_)
image_ptr_->paste(::nana::rectangle{ image_ptr_->size() }, dst, x, y);
if(image_ptr_ && !dst.empty())
image_ptr_->paste(::nana::rectangle{ image_ptr_->size() }, dst, p_dst);
if (!image_ptr_)
throw std::runtime_error("image is empty");
if (dst.empty())
throw std::invalid_argument("graphics is empty");
}
void image::paste(const nana::rectangle& r_src, graphics & dst, const nana::point& p_dst) const
{
if(image_ptr_)
image_ptr_->paste(r_src, dst, p_dst.x, p_dst.y);
if(image_ptr_ && !dst.empty())
image_ptr_->paste(r_src, dst, p_dst);
if (!image_ptr_)
throw std::runtime_error("image is empty");
if (dst.empty())
throw std::invalid_argument("graphics is empty");
}
void image::stretch(const nana::rectangle& r_src, graphics& dst, const nana::rectangle & r_dst) const
{
if(image_ptr_)
if(image_ptr_ && !dst.empty())
image_ptr_->stretch(r_src, dst, r_dst);
if (!image_ptr_)
throw std::runtime_error("image is empty");
if (dst.empty())
throw std::invalid_argument("graphics is empty");
}
//end class image

18
source/paint/pixel_buffer.cpp
View File

@ -633,13 +633,13 @@ namespace nana{ namespace paint
*reinterpret_cast<pixel_color_t*>(reinterpret_cast<char*>(sp->raw_pixel_buffer + x) + y * sp->bytes_per_line) = px;
}
void pixel_buffer::paste(drawable_type drawable, int x, int y) const
void pixel_buffer::paste(drawable_type drawable, const point& p_dst) const
{
if(storage_)
paste(nana::rectangle(storage_->pixel_size), drawable, x, y);
paste(nana::rectangle(storage_->pixel_size), drawable, p_dst);
}
void pixel_buffer::paste(const nana::rectangle& src_r, drawable_type drawable, int x, int y) const
void pixel_buffer::paste(const nana::rectangle& src_r, drawable_type drawable, const point& p_dst) const
{
auto sp = storage_.get();
if(drawable && sp)
@ -647,7 +647,7 @@ namespace nana{ namespace paint
if(sp->alpha_channel)
{
nana::rectangle s_good_r, d_good_r;
if(overlap(src_r, sp->pixel_size, nana::rectangle(x, y, src_r.width, src_r.height), paint::detail::drawable_size(drawable), s_good_r, d_good_r))
if(overlap(src_r, sp->pixel_size, nana::rectangle(p_dst.x, p_dst.y, src_r.width, src_r.height), paint::detail::drawable_size(drawable), s_good_r, d_good_r))
{
pixel_buffer d_pixbuf;
d_pixbuf.attach(drawable, d_good_r);
@ -660,16 +660,16 @@ namespace nana{ namespace paint
assign_windows_bitmapinfo(sp->pixel_size, bi);
::SetDIBitsToDevice(drawable->context,
x, y, src_r.width, src_r.height,
p_dst.x, p_dst.y, src_r.width, src_r.height,
src_r.x, static_cast<int>(sp->pixel_size.height) - src_r.y - src_r.height, 0, sp->pixel_size.height,
sp->raw_pixel_buffer, &bi, DIB_RGB_COLORS);
#elif defined(NANA_X11)
sp->put(drawable->pixmap, drawable->context, src_r.x, src_r.y, x, y, src_r.width, src_r.height);
sp->put(drawable->pixmap, drawable->context, src_r.x, src_r.y, p_dst.x, p_dst.y, src_r.width, src_r.height);
#endif
}
}
void pixel_buffer::paste(native_window_type wd, int x, int y) const
void pixel_buffer::paste(native_window_type wd, const point& p_dst) const
{
auto sp = storage_.get();
if(nullptr == wd || nullptr == sp) return;
@ -681,7 +681,7 @@ namespace nana{ namespace paint
assign_windows_bitmapinfo(sp->pixel_size, bi);
::SetDIBitsToDevice(handle,
x, y, sp->pixel_size.width, sp->pixel_size.height,
p_dst.x, p_dst.y, sp->pixel_size.width, sp->pixel_size.height,
0, 0, 0, sp->pixel_size.height,
sp->raw_pixel_buffer, &bi, DIB_RGB_COLORS);
@ -690,7 +690,7 @@ namespace nana{ namespace paint
#elif defined(NANA_X11)
auto & spec = nana::detail::platform_spec::instance();
Display * disp = spec.open_display();
sp->put(reinterpret_cast<Window>(wd), XDefaultGC(disp, XDefaultScreen(disp)), 0, 0, x, y, sp->pixel_size.width, sp->pixel_size.height);
sp->put(reinterpret_cast<Window>(wd), XDefaultGC(disp, XDefaultScreen(disp)), 0, 0, p_dst.x, p_dst.y, sp->pixel_size.width, sp->pixel_size.height);
#endif
}