Draw.cpp

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#include "Draw.h"
 
using namespace std;
 
template<typename T>
bool drawImplementation(const gui_framework::BaseWindow* window, const gui_framework::utility::BaseLoadableHolder& holder, int x, int y, const T& index);
 
namespace gui_framework
{
    namespace utility
    {
        namespace paint
        {
            GUI_FRAMEWORK_API_FUNCTION bool drawImageByIndex(const BaseWindow* window, const ImagesHolder& holder, int x, int y, uint16_t index)
            {
                return drawImplementation(window, holder, x, y, index);
            }
 
            GUI_FRAMEWORK_API_FUNCTION bool drawImageByPath(const BaseWindow* window, const ImagesHolder& holder, int x, int y, const filesystem::path& pathToImage)
            {
                return drawImplementation(window, holder, x, y, pathToImage);
            }
 
            GUI_FRAMEWORK_API_FUNCTION bool drawIconByIndex(const BaseWindow* window, const IconsHolder& holder, int x, int y, uint16_t index)
            {
                return drawImplementation(window, holder, x, y, index);
            }
 
            GUI_FRAMEWORK_API_FUNCTION bool drawIconByPath(const BaseWindow* window, const IconsHolder& holder, int x, int y, const filesystem::path& pathToImage)
            {
                return drawImplementation(window, holder, x, y, pathToImage);
            }
        }
    }
}
 
template<typename T>
bool drawImplementation(const gui_framework::BaseWindow* window, const gui_framework::utility::BaseLoadableHolder& holder, int x, int y, const T& index)
{
    PAINTSTRUCT paint = {};
    HWND handle = window->getHandle();
    HDC deviceContext = BeginPaint(handle, &paint);
    LPARAM drawData = NULL;
    uint32_t flags = DSS_NORMAL;
    bool result = false;
    
    try
    {
        const gui_framework::utility::ImagesHolder& imagesHolder = dynamic_cast<const gui_framework::utility::ImagesHolder&>(holder);
 
        drawData = reinterpret_cast<LPARAM>(imagesHolder.getImage(index));
 
        flags |= DST_BITMAP;
    }
    catch (const bad_cast&)
    {
        const gui_framework::utility::IconsHolder& iconsHolder = dynamic_cast<const gui_framework::utility::IconsHolder&>(holder);
 
        drawData = reinterpret_cast<LPARAM>(iconsHolder.getIcon(index));
 
        flags |= DST_ICON;
    }
 
    result = DrawStateW(deviceContext, NULL, nullptr, drawData, NULL, x, y, holder.getImagesWidth(), holder.getImagesHeight(), flags);
 
    ReleaseDC(handle, deviceContext);
 
    EndPaint(handle, &paint);
 
    return result;
}