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◆ main openmsx / src / console / OSDRectangle.cc
4.4 KiB · C++ · last changed chore(): initial commit 1 month ago source blame history raw
e8555c89 Andy McCall 1 
#include "OSDRectangle.hh"
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#include "CommandException.hh"
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#include "FileContext.hh"
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#include "FileOperations.hh"
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#include "GLImage.hh"
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#include "TclObject.hh"
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#include "stl.hh"
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#include <cassert>
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#include <cmath>
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#include <cstdint>
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#include <memory>
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using namespace gl;
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namespace openmsx {
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OSDRectangle::OSDRectangle(Display& display_, const TclObject& name_)
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	: OSDImageBasedWidget(display_, name_)
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{
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}
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void OSDRectangle::setProperty(
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	Interpreter& interp, std::string_view propName, const TclObject& value)
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{
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	if (propName == "-w") {
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		float w = value.getFloat(interp);
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		if (size.x != w) {
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			size.x = w;
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			invalidateRecursive();
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		}
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	} else if (propName == "-h") {
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		float h = value.getFloat(interp);
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		if (size.y != h) {
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			size.y = h;
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			invalidateRecursive();
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		}
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	} else if (propName == "-relw") {
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		float relw = value.getFloat(interp);
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		if (relSize.x != relw) {
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			relSize.x = relw;
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			invalidateRecursive();
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		}
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	} else if (propName == "-relh") {
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		float relh = value.getFloat(interp);
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		if (relSize.y != relh) {
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			relSize.y = relh;
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			invalidateRecursive();
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		}
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	} else if (propName == "-scale") {
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		float scale2 = value.getFloat(interp);
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		if (scale != scale2) {
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			scale = scale2;
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			invalidateRecursive();
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		}
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	} else if (propName == "-image") {
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		std::string_view val = value.getString();
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		if (imageName != val) {
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			if (!val.empty()) {
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				if (auto file = systemFileContext().resolve(val);
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				    !FileOperations::isRegularFile(file)) {
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					throw CommandException("Not a valid image file: ", val);
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				}
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			}
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			imageName = val;
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			invalidateRecursive();
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		}
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	} else if (propName == "-bordersize") {
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		float newSize = value.getFloat(interp);
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		if (borderSize != newSize) {
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			borderSize = newSize;
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			invalidateLocal();
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		}
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	} else if (propName == "-relbordersize") {
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		float newSize = value.getFloat(interp);
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		if (relBorderSize != newSize) {
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			relBorderSize = newSize;
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			invalidateLocal();
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		}
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	} else if (propName == "-borderrgba") {
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		uint32_t newRGBA = value.getInt(interp);
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		if (borderRGBA != newRGBA) {
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			borderRGBA = newRGBA;
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			invalidateLocal();
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		}
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	} else {
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		OSDImageBasedWidget::setProperty(interp, propName, value);
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	}
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}
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void OSDRectangle::getProperty(std::string_view propName, TclObject& result) const
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{
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	if (propName == "-w") {
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		result = size.x;
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	} else if (propName == "-h") {
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		result = size.y;
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	} else if (propName == "-relw") {
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		result = relSize.x;
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	} else if (propName == "-relh") {
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		result = relSize.y;
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	} else if (propName == "-scale") {
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		result = scale;
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	} else if (propName == "-image") {
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		result = imageName;
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	} else if (propName == "-bordersize") {
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		result = borderSize;
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	} else if (propName == "-relbordersize") {
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		result = relBorderSize;
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	} else if (propName == "-borderrgba") {
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		result = borderRGBA;
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	} else {
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		OSDImageBasedWidget::getProperty(propName, result);
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	}
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}
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std::string_view OSDRectangle::getType() const
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{
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	return "rectangle";
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}
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bool OSDRectangle::takeImageDimensions() const
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{
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	return (size == vec2()) && (relSize == vec2());
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}
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vec2 OSDRectangle::getSize(const OutputSurface& output) const
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{
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	if (!imageName.empty() && image && takeImageDimensions()) {
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		return vec2(image->getSize());
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	} else {
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		return (size * float(getScaleFactor(output)) * scale) +
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		       (getParent()->getSize(output) * relSize);
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	}
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}
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uint8_t OSDRectangle::getFadedAlpha() const
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{
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	return uint8_t(255 * getRecursiveFadeValue());
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}
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std::unique_ptr<GLImage> OSDRectangle::create(OutputSurface& output)
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{
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	if (imageName.empty()) {
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		if (hasConstantAlpha() && ((getRGBA(0) & 0xff) == 0) &&
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		    (((borderRGBA & 0xFF) == 0) || (borderSize == 0.0f))) {
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			// optimization: Sometimes it's useful to have a
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			//   rectangle that will never be drawn, it only exists
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			//   as a parent for sub-widgets. For those cases
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			//   creating an IMAGE only wastes memory. So postpone
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			//   creating it till alpha changes.
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			return nullptr;
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		}
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		vec2 sz = getSize(output);
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		auto factor = narrow<float>(getScaleFactor(output)) * scale;
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		auto bs = narrow_cast<int>(lrintf(factor * borderSize + sz.x * relBorderSize));
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		assert(bs >= 0);
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		return std::make_unique<GLImage>(round(sz), getRGBA4(), bs, borderRGBA);
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	} else {
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		auto file = systemFileContext().resolve(imageName);
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		if (takeImageDimensions()) {
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			auto factor = narrow<float>(getScaleFactor(output)) * scale;
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			return std::make_unique<GLImage>(file, factor);
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		} else {
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			ivec2 iSize = round(getSize(output));
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			return std::make_unique<GLImage>(file, iSize);
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		}
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	}
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}
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} // namespace openmsx