the great text and type rewrite
This commit is contained in:
parent
a220e40d13
commit
d0cc3ad16a
15 changed files with 628 additions and 318 deletions
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@ -20,41 +20,61 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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module;
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#define STB_IMAGE_IMPLEMENTATION
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#include "../lib/stb_image.h"
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#include "../lib/stb_truetype.h"
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export module Crafter.Graphics:RenderingElement;
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import std;
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import :Transform;
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import :Font;
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import :Types;
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import :Image;
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import :Window;
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export namespace Crafter {
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enum class TextAlignment {
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Left,
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Center,
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Right
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};
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enum class TextOverflowMode {
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Clip,
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Wrap
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};
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enum class TextScaleMode {
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None,
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Font,
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Element,
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Buffer
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};
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struct RenderElementScalingOwning {
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std::vector<Pixel_BU8_GU8_RU8_AU8> scalingBuffer;
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std::uint_fast32_t bufferWidth;
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std::uint_fast32_t bufferHeight;
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std::uint32_t bufferWidth;
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std::uint32_t bufferHeight;
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bool bufferUpdated = true;
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RenderElementScalingOwning() = default;
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RenderElementScalingOwning(std::uint_fast32_t bufferWidth, std::uint_fast32_t bufferHeight) : scalingBuffer(bufferWidth*bufferHeight), bufferWidth(bufferWidth), bufferHeight(bufferHeight) {
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RenderElementScalingOwning(std::uint32_t bufferWidth, std::uint32_t bufferHeight) : scalingBuffer(bufferWidth*bufferHeight), bufferWidth(bufferWidth), bufferHeight(bufferHeight) {
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}
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};
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struct RenderElementScalingNonOwning {
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Pixel_BU8_GU8_RU8_AU8* scalingBuffer;
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std::uint_fast32_t bufferWidth;
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std::uint_fast32_t bufferHeight;
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std::uint32_t bufferWidth;
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std::uint32_t bufferHeight;
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bool bufferUpdated = true;
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RenderElementScalingNonOwning() = default;
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RenderElementScalingNonOwning(Pixel_BU8_GU8_RU8_AU8* scalingBuffer, std::uint_fast32_t bufferWidth, std::uint_fast32_t bufferHeight) : scalingBuffer(scalingBuffer), bufferWidth(bufferWidth), bufferHeight(bufferHeight) {
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RenderElementScalingNonOwning(Pixel_BU8_GU8_RU8_AU8* scalingBuffer, std::uint32_t bufferWidth, std::uint32_t bufferHeight) : scalingBuffer(scalingBuffer), bufferWidth(bufferWidth), bufferHeight(bufferHeight) {
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}
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};
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struct RenderElementRotating {
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std::uint_fast32_t rotation;
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std::uint32_t rotation;
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bool rotationUpdated = true;
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RenderElementRotating() = default;
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RenderElementRotating(std::uint_fast32_t rotation) : rotation(rotation) {
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RenderElementRotating(std::uint32_t rotation) : rotation(rotation) {
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}
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};
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@ -100,49 +120,49 @@ export namespace Crafter {
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RenderingElement(Anchor anchor, OpaqueType opaque) : RenderingElementBase(anchor, opaque) {
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}
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RenderingElement(Anchor anchor, OpaqueType opaque, std::uint_fast32_t rotation) requires(Rotating) : RenderingElementBase(anchor, opaque), RotatingBase<Rotating>(rotation) {
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RenderingElement(Anchor anchor, OpaqueType opaque, std::uint32_t rotation) requires(Rotating) : RenderingElementBase(anchor, opaque), RotatingBase<Rotating>(rotation) {
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}
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RenderingElement(Anchor anchor, const std::string_view imagePath) : RenderingElementBase(anchor) {
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LoadImage(imagePath);
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}
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RenderingElement(Anchor anchor, const std::string_view imagePath, std::uint_fast32_t rotation) requires(Rotating) : RenderingElementBase(anchor), RotatingBase<Rotating>(rotation) {
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RenderingElement(Anchor anchor, const std::string_view imagePath, std::uint32_t rotation) requires(Rotating) : RenderingElementBase(anchor), RotatingBase<Rotating>(rotation) {
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LoadImage(imagePath);
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}
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RenderingElement(Anchor anchor, const std::string_view imagePath, OpaqueType opaque) : RenderingElementBase(anchor, opaque) {
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LoadImageNoOpaqueCheck(imagePath);
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}
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RenderingElement(Anchor anchor, const std::string_view imagePath, OpaqueType opaque, std::uint_fast32_t rotation) requires(Rotating) : RenderingElementBase(anchor, opaque), RotatingBase<Rotating>(rotation) {
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RenderingElement(Anchor anchor, const std::string_view imagePath, OpaqueType opaque, std::uint32_t rotation) requires(Rotating) : RenderingElementBase(anchor, opaque), RotatingBase<Rotating>(rotation) {
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LoadImageNoOpaqueCheck(imagePath);
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}
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RenderingElement(Anchor anchor, OpaqueType opaque, std::uint_fast32_t bufferWidth, std::uint_fast32_t bufferHeight, Pixel_BU8_GU8_RU8_AU8* scalingBuffer) requires(Scaling && !Owning) : RenderingElementBase(anchor, opaque), ScalingBase<Scaling, Owning>(bufferWidth, bufferHeight, scalingBuffer) {
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RenderingElement(Anchor anchor, OpaqueType opaque, std::uint32_t bufferWidth, std::uint32_t bufferHeight, Pixel_BU8_GU8_RU8_AU8* scalingBuffer) requires(Scaling && !Owning) : RenderingElementBase(anchor, opaque), ScalingBase<Scaling, Owning>(bufferWidth, bufferHeight, scalingBuffer) {
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}
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RenderingElement(Anchor anchor, OpaqueType opaque, std::uint_fast32_t bufferWidth, std::uint_fast32_t bufferHeight, Pixel_BU8_GU8_RU8_AU8* scalingBuffer, std::uint_fast32_t rotation) requires(Scaling && !Owning && Rotating) : RenderingElementBase(anchor, opaque), ScalingBase<Scaling, Owning>(bufferWidth, bufferHeight, scalingBuffer), RotatingBase<Rotating>(rotation) {
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RenderingElement(Anchor anchor, OpaqueType opaque, std::uint32_t bufferWidth, std::uint32_t bufferHeight, Pixel_BU8_GU8_RU8_AU8* scalingBuffer, std::uint32_t rotation) requires(Scaling && !Owning && Rotating) : RenderingElementBase(anchor, opaque), ScalingBase<Scaling, Owning>(bufferWidth, bufferHeight, scalingBuffer), RotatingBase<Rotating>(rotation) {
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}
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RenderingElement(Anchor anchor, OpaqueType opaque, Image& image) requires(Scaling && !Owning) : RenderingElementBase(anchor, opaque), ScalingBase<Scaling, Owning>(image.buffer.data(), image.width, image.height) {
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}
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RenderingElement(Anchor anchor, OpaqueType opaque, Image& image, std::uint_fast32_t rotation) requires(Scaling && !Owning && Rotating) : RenderingElementBase(anchor, opaque), ScalingBase<Scaling, Owning>(image.buffer.data(), image.width, image.height), RotatingBase<Rotating>(rotation) {
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RenderingElement(Anchor anchor, OpaqueType opaque, Image& image, std::uint32_t rotation) requires(Scaling && !Owning && Rotating) : RenderingElementBase(anchor, opaque), ScalingBase<Scaling, Owning>(image.buffer.data(), image.width, image.height), RotatingBase<Rotating>(rotation) {
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}
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RenderingElement(Anchor anchor, Image& image) requires(Scaling && !Owning) : RenderingElementBase(anchor, image.opaque), ScalingBase<Scaling, Owning>(image.buffer.data(), image.width, image.height) {
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}
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RenderingElement(Anchor anchor, Image& image, std::uint_fast32_t rotation) requires(Scaling && !Owning && Rotating) : RenderingElementBase(anchor, image.opaque), ScalingBase<Scaling, Owning>(image.buffer.data(), image.width, image.height), RotatingBase<Rotating>(rotation) {
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RenderingElement(Anchor anchor, Image& image, std::uint32_t rotation) requires(Scaling && !Owning && Rotating) : RenderingElementBase(anchor, image.opaque), ScalingBase<Scaling, Owning>(image.buffer.data(), image.width, image.height), RotatingBase<Rotating>(rotation) {
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}
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RenderingElement(Anchor anchor, OpaqueType opaque, std::uint_fast32_t bufferWidth, std::uint_fast32_t bufferHeight) requires(Owning) : RenderingElementBase(anchor, opaque), ScalingBase<Scaling, Owning>(bufferWidth, bufferHeight) {
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RenderingElement(Anchor anchor, OpaqueType opaque, std::uint32_t bufferWidth, std::uint32_t bufferHeight) requires(Owning) : RenderingElementBase(anchor, opaque), ScalingBase<Scaling, Owning>(bufferWidth, bufferHeight) {
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}
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RenderingElement(Anchor anchor, OpaqueType opaque, std::uint_fast32_t bufferWidth, std::uint_fast32_t bufferHeight, std::uint_fast32_t rotation) requires(Owning && Rotating) : RenderingElementBase(anchor, opaque), ScalingBase<Scaling, Owning>(bufferWidth, bufferHeight) , RotatingBase<Rotating>(rotation) {
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RenderingElement(Anchor anchor, OpaqueType opaque, std::uint32_t bufferWidth, std::uint32_t bufferHeight, std::uint32_t rotation) requires(Owning && Rotating) : RenderingElementBase(anchor, opaque), ScalingBase<Scaling, Owning>(bufferWidth, bufferHeight) , RotatingBase<Rotating>(rotation) {
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}
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@ -150,20 +170,20 @@ export namespace Crafter {
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RenderingElement& operator=(RenderingElement&) = delete;
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void ScaleNearestNeighbor() requires(Scaling) {
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for (std::uint_fast32_t y = 0; y < scaled.height; y++) {
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std::uint_fast32_t srcY = y * ScalingBase<true, Owning>::bufferHeight / scaled.height;
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for (std::uint_fast32_t x = 0; x < scaled.width; x++) {
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std::uint_fast32_t srcX = x * ScalingBase<true, Owning>::bufferWidth / scaled.width;
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for (std::uint32_t y = 0; y < scaled.height; y++) {
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std::uint32_t srcY = y * ScalingBase<true, Owning>::bufferHeight / scaled.height;
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for (std::uint32_t x = 0; x < scaled.width; x++) {
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std::uint32_t srcX = x * ScalingBase<true, Owning>::bufferWidth / scaled.width;
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buffer[y * scaled.width + x] = ScalingBase<true, Owning>::scalingBuffer[srcY * ScalingBase<true, Owning>::bufferWidth + srcX];
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}
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}
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}
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void ScaleRotating() requires(Scaling) {
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const double rad = (static_cast<double>(RotatingBase<true>::rotation) / static_cast<double>(std::numeric_limits<std::uint_fast32_t>::max())) * 2.0 * std::numbers::pi;
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const double rad = (static_cast<double>(RotatingBase<true>::rotation) / static_cast<double>(std::numeric_limits<std::uint32_t>::max())) * 2.0 * std::numbers::pi;
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const std::uint_fast32_t dstWidth = scaled.width;
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const std::uint_fast32_t dstHeight = scaled.height;
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const std::uint32_t dstWidth = scaled.width;
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const std::uint32_t dstHeight = scaled.height;
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const double c2 = std::abs(std::cos(rad));
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const double s2 = std::abs(std::sin(rad));
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@ -171,8 +191,8 @@ export namespace Crafter {
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const double rotatedWidth = dstWidth * c2 + dstHeight * s2;
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const double rotatedHeight = dstWidth * s2 + dstHeight * c2;
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const std::uint_fast32_t diffX = static_cast<std::uint_fast32_t>(std::ceil((rotatedWidth - dstWidth) * 0.5));
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const std::uint_fast32_t diffY = static_cast<std::uint_fast32_t>(std::ceil((rotatedHeight - dstHeight) * 0.5));
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const std::uint32_t diffX = static_cast<std::uint32_t>(std::ceil((rotatedWidth - dstWidth) * 0.5));
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const std::uint32_t diffY = static_cast<std::uint32_t>(std::ceil((rotatedHeight - dstHeight) * 0.5));
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scaled.width += diffX + diffX;
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scaled.height += diffY + diffY;
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@ -198,8 +218,8 @@ export namespace Crafter {
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const double scaleX = static_cast<double>(ScalingBase<true, Owning>::bufferWidth) / dstWidth;
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const double scaleY = static_cast<double>(ScalingBase<true, Owning>::bufferHeight) / dstHeight;
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for (std::uint_fast32_t yB = 0; yB < scaled.height; ++yB) {
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for (std::uint_fast32_t xB = 0; xB < scaled.width; ++xB) {
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for (std::uint32_t yB = 0; yB < scaled.height; ++yB) {
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for (std::uint32_t xB = 0; xB < scaled.width; ++xB) {
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// ---- Destination pixel relative to center ----
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const double dx = (static_cast<double>(xB) - dstCx) * scaleX;
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@ -210,8 +230,8 @@ export namespace Crafter {
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const double sy = (s * dx + c * dy) + srcCy;
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// ---- Nearest neighbour sampling ----
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const std::int_fast32_t srcX = static_cast<std::int_fast32_t>(std::round(sx));
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const std::int_fast32_t srcY = static_cast<std::int_fast32_t>(std::round(sy));
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const std::int32_t srcX = static_cast<std::int32_t>(std::round(sx));
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const std::int32_t srcY = static_cast<std::int32_t>(std::round(sy));
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if (srcX >= 0 && srcX < ScalingBase<true, Owning>::bufferWidth && srcY >= 0 && srcY < ScalingBase<true, Owning>::bufferHeight) {
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buffer[yB * scaled.width + xB] = ScalingBase<true, Owning>::scalingBuffer[srcY * ScalingBase<true, Owning>::bufferWidth + srcX];
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@ -308,9 +328,9 @@ export namespace Crafter {
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opaque = OpaqueType::FullyOpaque;
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if constexpr(Scaling) {
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for(std::uint_fast32_t x = 0; x < xSize; x++) {
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for(std::uint_fast32_t y = 0; y < ySize; y++) {
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std::uint_fast32_t idx = (x*ySize+y)*4;
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for(std::uint32_t x = 0; x < xSize; x++) {
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for(std::uint32_t y = 0; y < ySize; y++) {
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std::uint32_t idx = (x*ySize+y)*4;
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ScalingBase<true, Owning>::scalingBuffer[x*ySize+y].r = bgData[idx];
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ScalingBase<true, Owning>::scalingBuffer[x*ySize+y].g = bgData[idx+1];
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ScalingBase<true, Owning>::scalingBuffer[x*ySize+y].b = bgData[idx+2];
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@ -318,10 +338,10 @@ export namespace Crafter {
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}
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}
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for(std::uint_fast32_t i = 0; i < xSize*ySize; i++) {
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for(std::uint32_t i = 0; i < xSize*ySize; i++) {
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if(ScalingBase<true, Owning>::scalingBuffer[i].a != 255) {
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opaque = OpaqueType::SemiOpaque;
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for(std::uint_fast32_t i2 = 0; i2 < xSize*ySize; i2++) {
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for(std::uint32_t i2 = 0; i2 < xSize*ySize; i2++) {
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if(ScalingBase<true, Owning>::scalingBuffer[i2].a != 0 && ScalingBase<true, Owning>::scalingBuffer[i2].a != 255) {
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opaque = OpaqueType::Transparent;
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return;
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@ -331,9 +351,9 @@ export namespace Crafter {
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}
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}
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} else {
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for(std::uint_fast32_t x = 0; x < xSize; x++) {
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for(std::uint_fast32_t y = 0; y < ySize; y++) {
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std::uint_fast32_t idx = (x*ySize+y)*4;
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for(std::uint32_t x = 0; x < xSize; x++) {
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for(std::uint32_t y = 0; y < ySize; y++) {
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std::uint32_t idx = (x*ySize+y)*4;
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buffer[x*ySize+y].r = bgData[idx];
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buffer[x*ySize+y].g = bgData[idx+1];
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buffer[x*ySize+y].b = bgData[idx+2];
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@ -341,10 +361,10 @@ export namespace Crafter {
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}
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}
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for(std::uint_fast32_t i = 0; i < xSize*ySize; i++) {
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for(std::uint32_t i = 0; i < xSize*ySize; i++) {
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if(buffer[i].a != 255) {
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opaque = OpaqueType::SemiOpaque;
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for(std::uint_fast32_t i2 = 0; i2 < xSize*ySize; i2++) {
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for(std::uint32_t i2 = 0; i2 < xSize*ySize; i2++) {
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if(buffer[i2].a != 0 && buffer[i2].a != 255) {
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opaque = OpaqueType::Transparent;
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return;
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if constexpr(Scaling) {
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for(std::uint_fast32_t x = 0; x < xSize; x++) {
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for(std::uint_fast32_t y = 0; y < ySize; y++) {
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std::uint_fast32_t idx = (x*ySize+y)*4;
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for(std::uint32_t x = 0; x < xSize; x++) {
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for(std::uint32_t y = 0; y < ySize; y++) {
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std::uint32_t idx = (x*ySize+y)*4;
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ScalingBase<true, Owning>::scalingBuffer[x*ySize+y].r = bgData[idx];
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ScalingBase<true, Owning>::scalingBuffer[x*ySize+y].g = bgData[idx+1];
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ScalingBase<true, Owning>::scalingBuffer[x*ySize+y].b = bgData[idx+2];
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@ -385,9 +405,9 @@ export namespace Crafter {
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}
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}
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} else {
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for(std::uint_fast32_t x = 0; x < xSize; x++) {
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for(std::uint_fast32_t y = 0; y < ySize; y++) {
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std::uint_fast32_t idx = (x*ySize+y)*4;
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for(std::uint32_t x = 0; x < xSize; x++) {
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for(std::uint32_t y = 0; y < ySize; y++) {
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std::uint32_t idx = (x*ySize+y)*4;
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buffer[x*ySize+y].r = bgData[idx];
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buffer[x*ySize+y].g = bgData[idx+1];
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buffer[x*ySize+y].b = bgData[idx+2];
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@ -396,5 +416,238 @@ export namespace Crafter {
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}
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}
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}
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std::vector<std::string_view> ResizeText(Window& window, const std::string_view text, float size, Font& font, TextOverflowMode overflowMode = TextOverflowMode::Clip, TextScaleMode scaleMode = TextScaleMode::None, Transform* parent = nullptr) {
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float scale = stbtt_ScaleForPixelHeight(&font.font, size);
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int baseline = (int)(font.ascent * scale);
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std::vector<std::string_view> lines;
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std::string_view remaining = text;
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std::uint32_t lineHeight = (font.ascent - font.descent) * scale;
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if(overflowMode == TextOverflowMode::Clip) {
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while (!remaining.empty()) {
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// Find next newline or end of string
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auto newlinePos = remaining.find('\n');
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if (newlinePos != std::string_view::npos) {
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lines.emplace_back(remaining.substr(0, newlinePos));
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remaining = remaining.substr(newlinePos + 1);
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} else {
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lines.emplace_back(remaining);
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break;
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}
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}
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std::uint32_t maxWidth = 0;
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for(const std::string_view line: lines) {
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std::uint32_t lineWidth = 0;
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for (const char c : line) {
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int advance, lsb;
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stbtt_GetCodepointHMetrics(&font.font, c, &advance, &lsb);
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lineWidth += (int)(advance * scale);
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}
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if(lineWidth > maxWidth) {
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maxWidth = lineWidth;
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}
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}
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if(scaleMode == TextScaleMode::Element) {
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std::int32_t logicalPerPixelY = anchor.height / scaled.height;
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std::int32_t oldHeight = anchor.height;
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std::int32_t logicalPerPixelX = anchor.width / scaled.width;
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std::int32_t oldwidth = anchor.width;
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anchor.height = lineHeight * logicalPerPixelY;
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anchor.width = maxWidth * logicalPerPixelX;
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if(oldHeight != anchor.height || oldwidth != anchor.width) {
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if(parent) {
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UpdatePosition(window, *parent);
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} else {
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UpdatePosition(window);
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}
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}
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} else if(scaleMode == TextScaleMode::Font) {
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//todo
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} else if(scaleMode == TextScaleMode::Buffer) {
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if constexpr(Scaling && Owning) {
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std::uint32_t neededHeight = lines.size() * lineHeight;
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if(neededHeight != ScalingBase<true, true>::bufferHeight || maxWidth != ScalingBase<true, true>::bufferWidth) {
|
||||
ScalingBase<true, true>::bufferHeight = neededHeight;
|
||||
ScalingBase<true, true>::bufferWidth = maxWidth;
|
||||
ScalingBase<true, true>::bufferUpdated = true;
|
||||
ScalingBase<true, Owning>::scalingBuffer.resize(neededHeight*maxWidth);
|
||||
}
|
||||
}
|
||||
} else {
|
||||
if constexpr(Scaling) {
|
||||
lines.resize(ScalingBase<true, Owning>::bufferHeight / lines.size());
|
||||
} else {
|
||||
lines.resize(scaled.height / lines.size());
|
||||
}
|
||||
}
|
||||
} else {
|
||||
while (!remaining.empty()) {
|
||||
std::string_view line;
|
||||
auto newlinePos = remaining.find('\n');
|
||||
if (newlinePos != std::string_view::npos) {
|
||||
line = remaining.substr(0, newlinePos);
|
||||
remaining = remaining.substr(newlinePos + 1);
|
||||
} else {
|
||||
line = remaining;
|
||||
remaining = "";
|
||||
}
|
||||
|
||||
std::uint32_t lineWidth = 0;
|
||||
std::size_t lastWrapPos = 0; // position of last space that can be used to wrap
|
||||
std::size_t startPos = 0;
|
||||
|
||||
for (std::size_t i = 0; i < line.size(); ++i) {
|
||||
char c = line[i];
|
||||
|
||||
// get width of this character
|
||||
int advance, lsb;
|
||||
stbtt_GetCodepointHMetrics(&font.font, c, &advance, &lsb);
|
||||
lineWidth += (std::uint32_t)(advance * scale);
|
||||
|
||||
// remember last space for wrapping
|
||||
if (c == ' ') {
|
||||
lastWrapPos = i;
|
||||
}
|
||||
|
||||
// if line exceeds width, wrap
|
||||
if (lineWidth > scaled.width) {
|
||||
std::size_t wrapPos;
|
||||
if (lastWrapPos > startPos) {
|
||||
wrapPos = lastWrapPos; // wrap at last space
|
||||
} else {
|
||||
wrapPos = i; // no space, hard wrap
|
||||
}
|
||||
|
||||
// push the line up to wrapPos
|
||||
lines.push_back(line.substr(startPos, wrapPos - startPos));
|
||||
|
||||
// skip any spaces at the beginning of next line
|
||||
startPos = wrapPos;
|
||||
while (startPos < line.size() && line[startPos] == ' ') {
|
||||
++startPos;
|
||||
}
|
||||
|
||||
// reset width and i
|
||||
lineWidth = 0;
|
||||
i = startPos - 1; // -1 because loop will increment i
|
||||
}
|
||||
}
|
||||
|
||||
// add the remaining part of the line
|
||||
if (startPos < line.size()) {
|
||||
lines.push_back(line.substr(startPos));
|
||||
}
|
||||
}
|
||||
|
||||
if(scaleMode == TextScaleMode::Element) {
|
||||
std::int32_t logicalPerPixelY = anchor.height / scaled.height;
|
||||
std::int32_t oldHeight = anchor.height;
|
||||
anchor.height = lineHeight * logicalPerPixelY;
|
||||
if(oldHeight != anchor.height) {
|
||||
if(parent) {
|
||||
UpdatePosition(window, *parent);
|
||||
} else {
|
||||
UpdatePosition(window);
|
||||
}
|
||||
}
|
||||
} else if(scaleMode == TextScaleMode::Font) {
|
||||
//todo
|
||||
} else if(scaleMode == TextScaleMode::Buffer) {
|
||||
if constexpr(Scaling && Owning) {
|
||||
std::uint32_t neededHeight = lines.size() * lineHeight;
|
||||
if(neededHeight != ScalingBase<true, true>::bufferHeight) {
|
||||
ScalingBase<true, true>::bufferHeight = neededHeight;
|
||||
ScalingBase<true, true>::bufferUpdated = true;
|
||||
ScalingBase<true, Owning>::scalingBuffer.resize(neededHeight*ScalingBase<true, true>::bufferWidth);
|
||||
}
|
||||
}
|
||||
} else {
|
||||
if constexpr(Scaling) {
|
||||
lines.resize(ScalingBase<true, Owning>::bufferHeight / lines.size());
|
||||
} else {
|
||||
lines.resize(scaled.height / lines.size());
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return lines;
|
||||
}
|
||||
void RenderText(Window& window, std::span<const std::string_view> lines, float size, Pixel_BU8_GU8_RU8_AU8 color, Font& font, TextAlignment alignment = TextAlignment::Left, std::uint32_t offsetX = 0, std::uint32_t offsetY = 0) {
|
||||
float scale = stbtt_ScaleForPixelHeight(&font.font, size);
|
||||
int baseline = (int)(font.ascent * scale);
|
||||
std::uint32_t lineHeight = (font.ascent - font.descent) * scale;
|
||||
std::uint32_t currentY = baseline;
|
||||
for(std::string_view line : lines) {
|
||||
|
||||
std::uint32_t lineWidth = 0;
|
||||
for (const char c : line) {
|
||||
int advance, lsb;
|
||||
stbtt_GetCodepointHMetrics(&font.font, c, &advance, &lsb);
|
||||
lineWidth += (int)(advance * scale);
|
||||
}
|
||||
|
||||
std::uint32_t startX = 0;
|
||||
switch (alignment) {
|
||||
case TextAlignment::Left:
|
||||
startX = 0;
|
||||
break;
|
||||
case TextAlignment::Center:
|
||||
startX = (scaled.width - lineWidth) / 2;
|
||||
break;
|
||||
case TextAlignment::Right:
|
||||
startX = scaled.width - lineWidth;
|
||||
break;
|
||||
}
|
||||
std::uint32_t x = startX;
|
||||
|
||||
for (std::size_t i = 0; i < line.size(); ++i) {
|
||||
int codepoint = line[i];
|
||||
|
||||
int ax;
|
||||
int lsb;
|
||||
stbtt_GetCodepointHMetrics(&font.font, codepoint, &ax, &lsb);
|
||||
|
||||
int c_x1, c_y1, c_x2, c_y2;
|
||||
stbtt_GetCodepointBitmapBox(&font.font, codepoint, scale, scale, &c_x1, &c_y1, &c_x2, &c_y2);
|
||||
|
||||
int w = c_x2 - c_x1;
|
||||
int h = c_y2 - c_y1;
|
||||
|
||||
std::vector<unsigned char> bitmap(w * h);
|
||||
stbtt_MakeCodepointBitmap(&font.font, bitmap.data(), w, h, w, scale, scale, codepoint);
|
||||
|
||||
// Only render characters that fit within the scaled bounds
|
||||
for (int j = 0; j < h; j++) {
|
||||
for (int i = 0; i < w; i++) {
|
||||
int bufferX = x + i + c_x1 + offsetX;
|
||||
int bufferY = currentY + j + c_y1 + offsetY;
|
||||
|
||||
// Only draw pixels that are within our scaled buffer bounds
|
||||
if constexpr(Scaling) {
|
||||
if (bufferX >= 0 && bufferX < ScalingBase<true, Owning>::bufferWidth && bufferY >= 0 && bufferY < ScalingBase<true, Owning>::bufferHeight) {
|
||||
ScalingBase<true, Owning>::scalingBuffer[bufferY * ScalingBase<true, Owning>::bufferWidth + bufferX] = {color.r, color.g, color.b, bitmap[j * w + i]};
|
||||
}
|
||||
} else {
|
||||
if (bufferX >= 0 && bufferX < (int)scaled.width && bufferY >= 0 && bufferY < (int)scaled.height) {
|
||||
buffer[bufferY * scaled.width + bufferX] = {color.r, color.g, color.b, bitmap[j * w + i]};
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
x += (int)(ax * scale);
|
||||
|
||||
if (i + 1 < line.size()) {
|
||||
x += (int)stbtt_GetCodepointKernAdvance(&font.font, codepoint, line[i+1]);
|
||||
}
|
||||
}
|
||||
currentY += lineHeight;
|
||||
}
|
||||
}
|
||||
};
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue