[nostalgia/core/studio] Add scrolling support to TileSheetEditor

src/nostalgia/core/studio/tilesheetpixels.cpp

@@ -3,7 +3,7 @@
  */
 
 #include <nostalgia/core/consts.hpp>
-#include "ptidxconv.hpp"
+#include <nostalgia/core/ptidxconv.hpp>
 #include "tilesheetpixels.hpp"
 
 namespace nostalgia::core {
@@ -18,12 +18,14 @@ ox::Error TileSheetPixels::buildShader() noexcept {
 	return glutils::buildShaderProgram(Vshad, Fshad).moveTo(&m_shader);
 }
 
-void TileSheetPixels::draw(bool update) noexcept {
+void TileSheetPixels::draw(bool update, const ImVec2 &scroll) noexcept {
 	glUseProgram(m_shader);
 	glBindVertexArray(m_bufferSet.vao);
 	if (update) {
 		glutils::sendVbo(m_bufferSet);
 	}
+	const auto uniformScroll = static_cast<GLint>(glGetUniformLocation(m_shader, "vScroll"));
+	glUniform2f(uniformScroll, scroll.x, scroll.y);
 	glDrawElements(GL_TRIANGLES, static_cast<GLsizei>(m_bufferSet.elements.size()), GL_UNSIGNED_INT, nullptr);
 }
 
@@ -47,6 +49,13 @@ void TileSheetPixels::initBufferSet(const NostalgiaGraphic &img, const Nostalgia
 	                      reinterpret_cast<void*>(2 * sizeof(float)));
 }
 
+ImVec2 TileSheetPixels::pixelSize(const ImVec2 &paneSize) const noexcept {
+	const auto [sw, sh] = paneSize;
+	constexpr float ymod = 0.35f / 10.0f;
+	const auto xmod = ymod * sh / sw;
+	return {xmod * m_pixelSizeMod, ymod * m_pixelSizeMod};
+}
+
 void TileSheetPixels::setPixelBufferObject(unsigned vertexRow, float x, float y, Color16 color, float *vbo, GLuint *ebo) noexcept {
 	const auto [xmod, ymod] = pixelSize();
 	x *= xmod;
@@ -102,11 +111,4 @@ void TileSheetPixels::setBufferObjects(const NostalgiaGraphic &img, const Nostal
 	}
 }
 
-ImVec2 TileSheetPixels::pixelSize() const noexcept {
-	const auto [sw, sh] = ImGui::GetContentRegionAvail();
-	constexpr float ymod = 0.35f / 10.0f;
-	const auto xmod = ymod * sh / sw;
-	return {xmod * m_pixelSizeMod, ymod * m_pixelSizeMod};
-}
-
 }