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#include "BitmapCache.hpp"
#include "libslic3r/Utils.hpp"
#if ! defined(WIN32) && ! defined(__APPLE__)
#define BROKEN_ALPHA
#endif
#ifdef BROKEN_ALPHA
#include <wx/mstream.h>
#include <wx/rawbmp.h>
#endif /* BROKEN_ALPHA */
#define NANOSVG_IMPLEMENTATION
#include "nanosvg/nanosvg.h"
#define NANOSVGRAST_IMPLEMENTATION
#include "nanosvg/nanosvgrast.h"
#include "GUI_App.hpp"
namespace Slic3r { namespace GUI {
void BitmapCache::clear()
{
for (std::pair<const std::string, wxBitmap*> &bitmap : m_map)
delete bitmap.second;
m_map.clear();
}
static wxBitmap wxImage_to_wxBitmap_with_alpha(wxImage &&image, float scale = 1.0f)
{
#ifdef BROKEN_ALPHA
wxMemoryOutputStream stream;
image.SaveFile(stream, wxBITMAP_TYPE_PNG);
wxStreamBuffer *buf = stream.GetOutputStreamBuffer();
return wxBitmap::NewFromPNGData(buf->GetBufferStart(), buf->GetBufferSize());
#else
#ifdef __APPLE__
// This is a c-tor native to Mac OS. We need to let the Mac OS wxBitmap implementation
// know that the image may already be scaled appropriately for Retina,
// and thereby that it's not supposed to upscale it.
// Contrary to intuition, the `scale` argument isn't "please scale this to such and such"
// but rather "the wxImage is sized for backing scale such and such".
return wxBitmap(std::move(image), -1, scale);
#else
return wxBitmap(std::move(image));
#endif
#endif
}
wxBitmap* BitmapCache::insert(const std::string &bitmap_key, size_t width, size_t height)
{
wxBitmap *bitmap = nullptr;
auto it = m_map.find(bitmap_key);
if (it == m_map.end()) {
bitmap = new wxBitmap(width, height);
m_map[bitmap_key] = bitmap;
} else {
bitmap = it->second;
if (bitmap->GetWidth() != width || bitmap->GetHeight() != height)
bitmap->Create(width, height);
}
#ifndef BROKEN_ALPHA
bitmap->UseAlpha();
#endif
return bitmap;
}
wxBitmap* BitmapCache::insert(const std::string &bitmap_key, const wxBitmap &bmp)
{
wxBitmap *bitmap = nullptr;
auto it = m_map.find(bitmap_key);
if (it == m_map.end()) {
bitmap = new wxBitmap(bmp);
m_map[bitmap_key] = bitmap;
} else {
bitmap = it->second;
*bitmap = bmp;
}
return bitmap;
}
wxBitmap* BitmapCache::insert(const std::string &bitmap_key, const wxBitmap &bmp, const wxBitmap &bmp2)
{
// Copying the wxBitmaps is cheap as the bitmap's content is reference counted.
const wxBitmap bmps[2] = { bmp, bmp2 };
return this->insert(bitmap_key, bmps, bmps + 2);
}
wxBitmap* BitmapCache::insert(const std::string &bitmap_key, const wxBitmap &bmp, const wxBitmap &bmp2, const wxBitmap &bmp3)
{
// Copying the wxBitmaps is cheap as the bitmap's content is reference counted.
const wxBitmap bmps[3] = { bmp, bmp2, bmp3 };
return this->insert(bitmap_key, bmps, bmps + 3);
}
wxBitmap* BitmapCache::insert(const std::string &bitmap_key, const wxBitmap *begin, const wxBitmap *end)
{
size_t width = 0;
size_t height = 0;
for (const wxBitmap *bmp = begin; bmp != end; ++ bmp) {
width += bmp->GetWidth();
height = std::max<size_t>(height, bmp->GetHeight());
}
#ifdef BROKEN_ALPHA
wxImage image(width, height);
image.InitAlpha();
// Fill in with a white color.
memset(image.GetData(), 0x0ff, width * height * 3);
// Fill in with full transparency.
memset(image.GetAlpha(), 0, width * height);
size_t x = 0;
for (const wxBitmap *bmp = begin; bmp != end; ++ bmp) {
if (bmp->GetWidth() > 0) {
if (bmp->GetDepth() == 32) {
wxAlphaPixelData data(*const_cast<wxBitmap*>(bmp));
//FIXME The following method is missing from wxWidgets 3.1.1.
// It looks like the wxWidgets 3.0.3 called the wrapped bitmap's UseAlpha().
//data.UseAlpha();
if (data) {
for (int r = 0; r < bmp->GetHeight(); ++ r) {
wxAlphaPixelData::Iterator src(data);
src.Offset(data, 0, r);
unsigned char *dst_pixels = image.GetData() + (x + r * width) * 3;
unsigned char *dst_alpha = image.GetAlpha() + x + r * width;
for (int c = 0; c < bmp->GetWidth(); ++ c, ++ src) {
*dst_pixels ++ = src.Red();
*dst_pixels ++ = src.Green();
*dst_pixels ++ = src.Blue();
*dst_alpha ++ = src.Alpha();
}
}
}
} else if (bmp->GetDepth() == 24) {
wxNativePixelData data(*const_cast<wxBitmap*>(bmp));
if (data) {
for (int r = 0; r < bmp->GetHeight(); ++ r) {
wxNativePixelData::Iterator src(data);
src.Offset(data, 0, r);
unsigned char *dst_pixels = image.GetData() + (x + r * width) * 3;
unsigned char *dst_alpha = image.GetAlpha() + x + r * width;
for (int c = 0; c < bmp->GetWidth(); ++ c, ++ src) {
*dst_pixels ++ = src.Red();
*dst_pixels ++ = src.Green();
*dst_pixels ++ = src.Blue();
*dst_alpha ++ = wxALPHA_OPAQUE;
}
}
}
}
}
x += bmp->GetWidth();
}
return this->insert(bitmap_key, wxImage_to_wxBitmap_with_alpha(std::move(image)));
#else
wxBitmap *bitmap = this->insert(bitmap_key, width, height);
wxMemoryDC memDC;
memDC.SelectObject(*bitmap);
memDC.SetBackground(*wxTRANSPARENT_BRUSH);
memDC.Clear();
size_t x = 0;
for (const wxBitmap *bmp = begin; bmp != end; ++ bmp) {
if (bmp->GetWidth() > 0)
memDC.DrawBitmap(*bmp, x, 0, true);
x += bmp->GetWidth();
}
memDC.SelectObject(wxNullBitmap);
return bitmap;
#endif
}
wxBitmap* BitmapCache::insert_raw_rgba(const std::string &bitmap_key, unsigned width, unsigned height, const unsigned char *raw_data, float scale /* = 1.0f */, const bool grayscale/* = false*/)
{
wxImage image(width, height);
image.InitAlpha();
unsigned char *rgb = image.GetData();
unsigned char *alpha = image.GetAlpha();
unsigned int pixels = width * height;
for (unsigned int i = 0; i < pixels; ++ i) {
*rgb ++ = *raw_data ++;
*rgb ++ = *raw_data ++;
*rgb ++ = *raw_data ++;
*alpha ++ = *raw_data ++;
}
if (grayscale)
image = image.ConvertToGreyscale(m_gs, m_gs, m_gs);
return this->insert(bitmap_key, wxImage_to_wxBitmap_with_alpha(std::move(image), scale));
}
wxBitmap* BitmapCache::load_png(const std::string &bitmap_name, unsigned int width, unsigned int height,
const bool grayscale/* = false*/)
{
std::string bitmap_key = bitmap_name + ( height !=0 ?
"-h" + std::to_string(height) :
"-w" + std::to_string(width))
+ (grayscale ? "-gs" : "");
auto it = m_map.find(bitmap_key);
if (it != m_map.end())
return it->second;
wxImage image;
if (! image.LoadFile(Slic3r::GUI::from_u8(Slic3r::var(bitmap_name + ".png")), wxBITMAP_TYPE_PNG) ||
image.GetWidth() == 0 || image.GetHeight() == 0)
return nullptr;
if (height != 0 && image.GetHeight() != height)
width = int(0.5f + float(image.GetWidth()) * height / image.GetHeight());
else if (width != 0 && image.GetWidth() != width)
height = int(0.5f + float(image.GetHeight()) * width / image.GetWidth());
if (height != 0 && width != 0)
image.Rescale(width, height, wxIMAGE_QUALITY_BILINEAR);
if (grayscale)
image = image.ConvertToGreyscale(m_gs, m_gs, m_gs);
return this->insert(bitmap_key, wxImage_to_wxBitmap_with_alpha(std::move(image)));
}
wxBitmap* BitmapCache::load_svg(const std::string &bitmap_name, unsigned target_width, unsigned target_height,
float scale /* = 1.0f */, const bool grayscale/* = false*/)
{
std::string bitmap_key = bitmap_name + ( target_height !=0 ?
"-h" + std::to_string(target_height) :
"-w" + std::to_string(target_width))
+ (scale != 1.0f ? "-s" + std::to_string(scale) : "")
+ (grayscale ? "-gs" : "");
target_height != 0 ? target_height *= scale : target_width *= scale;
auto it = m_map.find(bitmap_key);
if (it != m_map.end())
return it->second;
NSVGimage *image = ::nsvgParseFromFile(Slic3r::var(bitmap_name + ".svg").c_str(), "px", 96.0f);
if (image == nullptr)
return nullptr;
float svg_scale = target_height != 0 ?
(float)target_height / image->height : target_width != 0 ?
(float)target_width / image->width : 1;
int width = (int)(svg_scale * image->width + 0.5f);
int height = (int)(svg_scale * image->height + 0.5f);
int n_pixels = width * height;
if (n_pixels <= 0) {
::nsvgDelete(image);
return nullptr;
}
NSVGrasterizer *rast = ::nsvgCreateRasterizer();
if (rast == nullptr) {
::nsvgDelete(image);
return nullptr;
}
std::vector<unsigned char> data(n_pixels * 4, 0);
::nsvgRasterize(rast, image, 0, 0, svg_scale, data.data(), width, height, width * 4);
::nsvgDeleteRasterizer(rast);
::nsvgDelete(image);
return this->insert_raw_rgba(bitmap_key, width, height, data.data(), scale, grayscale);
}
wxBitmap BitmapCache::mksolid(size_t width, size_t height, unsigned char r, unsigned char g, unsigned char b, unsigned char transparency)
{
wxImage image(width, height);
image.InitAlpha();
unsigned char* imgdata = image.GetData();
unsigned char* imgalpha = image.GetAlpha();
for (size_t i = 0; i < width * height; ++ i) {
*imgdata ++ = r;
*imgdata ++ = g;
*imgdata ++ = b;
*imgalpha ++ = transparency;
}
return wxImage_to_wxBitmap_with_alpha(std::move(image));
}
} // namespace GUI
} // namespace Slic3r
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