110 lines
3.7 KiB
C++
110 lines
3.7 KiB
C++
/*
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* Copyright 2016 - 2022 Gary Talent (gary@drinkingtea.net). All rights reserved.
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*/
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#include <nostalgia/core/consts.hpp>
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#include <nostalgia/core/media.hpp>
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#include <nostalgia/geo/point.hpp>
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#include "tilesheeteditorview.hpp"
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namespace nostalgia::core {
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TileSheetEditorView::TileSheetEditorView(Context *ctx, const ox::String &path): m_model(ctx, path), m_pixelsDrawer(&m_model) {
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// build shaders
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oxThrowError(m_pixelsDrawer.buildShader());
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oxThrowError(m_pixelGridDrawer.buildShader());
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m_model.activeSubsheetChanged.connect(this, &TileSheetEditorView::setActiveSubsheet);
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}
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void TileSheetEditorView::draw() noexcept {
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constexpr Color32 bgColor = 0x717d7e;
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glClearColor(redf(bgColor), greenf(bgColor), bluef(bgColor), 1.f);
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glClear(GL_COLOR_BUFFER_BIT);
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m_pixelsDrawer.draw(updated(), m_scrollOffset);
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m_pixelGridDrawer.draw(updated(), m_scrollOffset);
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}
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void TileSheetEditorView::scrollV(const geo::Vec2 &paneSz, float wheel, bool zoomMod) noexcept {
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const auto pixelSize = m_pixelsDrawer.pixelSize(paneSz);
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const ImVec2 sheetSize(pixelSize.x * static_cast<float>(m_model.activeSubSheet()->columns) * TileWidth,
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pixelSize.y * static_cast<float>(m_model.activeSubSheet()->rows) * TileHeight);
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if (zoomMod) {
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m_pixelSizeMod = ox::clamp(m_pixelSizeMod + wheel * 0.02f, 0.55f, 2.f);
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m_pixelsDrawer.setPixelSizeMod(m_pixelSizeMod);
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m_pixelGridDrawer.setPixelSizeMod(m_pixelSizeMod);
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m_updated = true;
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} else {
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m_scrollOffset.y -= wheel * 0.1f;
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}
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// adjust scroll offset in both cases because the image can be zoomed
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// or scrolled off screen
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m_scrollOffset.y = ox::clamp(m_scrollOffset.y, 0.f, sheetSize.y / 2);
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}
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void TileSheetEditorView::scrollH(const geo::Vec2 &paneSz, float wheelh) noexcept {
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const auto pixelSize = m_pixelsDrawer.pixelSize(paneSz);
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const ImVec2 sheetSize(pixelSize.x * static_cast<float>(m_model.activeSubSheet()->columns) * TileWidth,
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pixelSize.y * static_cast<float>(m_model.activeSubSheet()->rows) * TileHeight);
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m_scrollOffset.x += wheelh * 0.1f;
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m_scrollOffset.x = ox::clamp(m_scrollOffset.x, -(sheetSize.x / 2), 0.f);
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}
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void TileSheetEditorView::clickDraw(const geo::Vec2 &paneSize, const geo::Vec2 &clickPos) noexcept {
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const auto pt = clickPoint(paneSize, clickPos);
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m_model.drawCommand(pt, m_palIdx);
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}
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void TileSheetEditorView::clickSelect(const geo::Vec2 &paneSize, const geo::Vec2 &clickPos) noexcept {
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const auto pt = clickPoint(paneSize, clickPos);
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m_model.select(pt);
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}
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void TileSheetEditorView::clickFill(const geo::Vec2 &paneSize, const geo::Vec2 &clickPos) noexcept {
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const auto pt = clickPoint(paneSize, clickPos);
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m_model.fill(pt, m_palIdx);
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}
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void TileSheetEditorView::releaseMouseButton() noexcept {
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m_model.endDrawCommand();
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m_model.completeSelection();
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}
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void TileSheetEditorView::resizeView(const geo::Vec2 &sz) noexcept {
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m_viewSize = sz;
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initView();
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}
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bool TileSheetEditorView::updated() const noexcept {
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return m_updated || m_model.updated();
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}
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void TileSheetEditorView::ackUpdate() noexcept {
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m_updated = false;
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m_model.ackUpdate();
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}
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void TileSheetEditorView::initView() noexcept {
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m_pixelsDrawer.initBufferSet(m_viewSize);
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m_pixelGridDrawer.initBufferSet(m_viewSize, *m_model.activeSubSheet());
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}
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geo::Point TileSheetEditorView::clickPoint(const geo::Vec2 &paneSize, const geo::Vec2 &clickPos) const noexcept {
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auto [x, y] = clickPos;
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const auto pixDrawSz = m_pixelsDrawer.pixelSize(paneSize);
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x /= paneSize.x;
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y /= paneSize.y;
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x += -m_scrollOffset.x / 2;
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y += m_scrollOffset.y / 2;
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x /= pixDrawSz.x;
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y /= pixDrawSz.y;
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return {static_cast<int>(x * 2), static_cast<int>(y * 2)};
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}
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ox::Error TileSheetEditorView::setActiveSubsheet(const TileSheet::SubSheetIdx&) noexcept {
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initView();
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return OxError(0);
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}
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}
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