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#include "clBitmap.h"
#if wxUSE_GUI
#include <wx/dcscreen.h>
#include <wx/filename.h>
#include <wx/window.h>
#ifdef __WXGTK20__
#include <gtk/gtk.h>
#endif
clBitmap::clBitmap() {}
clBitmap::clBitmap(const wxImage& img, double scale)
#if wxVERSION_NUMBER >= 3100
: wxBitmap(img, -1, scale)
#else
: wxBitmap(img, -1)
#endif
{
}
clBitmap::~clBitmap() {}
bool clBitmap::LoadFile(const wxString& name, wxBitmapType type)
{
#if defined(__WXMSW__)
wxFileName filename(name);
double scale = 1.0;
if(ShouldLoadHiResImages()) {
wxFileName hiResFileName = filename;
wxString hiresName = hiResFileName.GetName();
hiresName << "@2x";
hiResFileName.SetName(hiresName);
if(hiResFileName.Exists()) {
filename = hiResFileName;
scale = 2.0;
}
}
wxImage img(filename.GetFullPath(), type);
*this = clBitmap(img, scale);
return true;
#else
return wxBitmap::LoadFile(name, type);
#endif
}
bool clBitmap::ShouldLoadHiResImages()
{
static bool once = false;
static bool shouldLoad = false;
if(!once) {
once = true;
#ifdef __WXGTK__
// try the environment variable approach first
wxString dpiscale = "1.0";
if(wxGetEnv("GDK_DPI_SCALE", &dpiscale)) {
double scale = 1.0;
if(dpiscale.ToDouble(&scale)) {
shouldLoad = (scale >= 1.5);
return shouldLoad;
}
}
// Try the GTK way
GdkScreen* screen = gdk_screen_get_default();
if(screen) {
double res = gdk_screen_get_resolution(screen);
shouldLoad = ((res / 96.) >= 1.5);
}
#else
shouldLoad = ((wxScreenDC().GetPPI().y / 96.) >= 1.5);
#endif
}
return shouldLoad;
}
bool clBitmap::LoadPNGFromMemory(const wxString& name, wxMemoryInputStream& mis,
std::function<bool(const wxString&, void**, size_t&)> fnGetHiResVersion)
{
void* pData = NULL;
size_t nLen = 0;
// we will load the @2x version on demand
if(name.Contains("@2x")) { return false; }
if(ShouldLoadHiResImages()) {
wxString hiresName = name + "@2x";
if(fnGetHiResVersion(hiresName, &pData, nLen)) {
wxMemoryInputStream m(pData, nLen);
wxImage img(m, wxBITMAP_TYPE_PNG);
if(img.IsOk()) {
*this = clBitmap(img, 2.0);
return IsOk();
}
}
}
wxImage img(mis, wxBITMAP_TYPE_PNG);
*this = clBitmap(img, 1.0);
return IsOk();
}
#endif // LIBCODELITE_WITH_UI
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