drinkingtea/nostalgia
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[nostalgia/studio] Add export option to tilesheet editor

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This commit is contained in:
Gary Talent
2022-05-25 21:21:28 -05:00
parent 2448bdcc82
commit 0adfaa7901
6 changed files with 103 additions and 31 deletions
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54
src/nostalgia/core/studio/tilesheeteditor-imgui.cpp
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@@ -3,6 +3,7 @@
*/
#include <imgui.h>
#include <lodepng.h>
#include <nostalgia/core/media.hpp>
#include <nostalgia/geo/point.hpp>
@@ -11,10 +12,29 @@
namespace nostalgia::core {
static ox::Error toPngFile(const ox::String &path, const TileSheet::SubSheet &s, const Palette &pal, int8_t bpp) noexcept {
ox::Vector<uint8_t> pixels;
s.readPixelsTo(&pixels, bpp);
const unsigned rows = s.rows == -1 ? pixels.size() / PixelsPerTile : static_cast<unsigned>(s.rows);
const unsigned cols = s.columns == -1 ? 1 : static_cast<unsigned>(s.columns);
const auto width = cols * TileWidth;
const auto height = rows * TileHeight;
ox::Vector<unsigned char> outData(pixels.size() * 3);
for (auto idx = 0; const auto colorIdx : pixels) {
const auto pt = idxToPt(idx, static_cast<int>(cols));
const auto i = static_cast<unsigned>(pt.y * static_cast<int>(width) + pt.x) * 3;
const auto c = pal.colors[colorIdx];
outData[i + 0] = (red32(c));
outData[i + 1] = (green32(c));
outData[i + 2] = (blue32(c));
++idx;
}
return OxError(lodepng_encode24_file(path.c_str(), outData.data(), width, height));
}
TileSheetEditorImGui::TileSheetEditorImGui(Context *ctx, const ox::String &path): m_tileSheetEditor(ctx, path) {
m_ctx = ctx;
m_itemPath = path;
const auto lastSlash = std::find(m_itemPath.rbegin(), m_itemPath.rend(), '/').offset();
const auto lastSlash = ox::find(m_itemPath.rbegin(), m_itemPath.rend(), '/').offset();
m_itemName = m_itemPath.substr(lastSlash + 1);
// init palette idx
const auto &palPath = model()->palPath();
@@ -41,6 +61,7 @@ const ox::String &TileSheetEditorImGui::itemDisplayName() const noexcept {
}
void TileSheetEditorImGui::exportFile() {
exportSubhseetToPng();
}
void TileSheetEditorImGui::cut() {
@@ -125,9 +146,13 @@ void TileSheetEditorImGui::draw(core::Context*) noexcept {
}
}
ImGui::SameLine();
if (ImGui::Button("Edit", ImVec2(36, btnHeight))) {
if (ImGui::Button("Edit", ImVec2(51, btnHeight))) {
showSubsheetEditor();
}
ImGui::SameLine();
if (ImGui::Button("Export", ImVec2(51, btnHeight))) {
exportSubhseetToPng();
}
TileSheet::SubSheetIdx path;
static constexpr auto flags = ImGuiTableFlags_RowBg | ImGuiTableFlags_NoBordersInBody;
if (ImGui::BeginTable("Subsheets", 3, flags)) {
@@ -214,6 +239,21 @@ void TileSheetEditorImGui::showSubsheetEditor() noexcept {
}
}
void TileSheetEditorImGui::exportSubhseetToPng() noexcept {
auto [path, err] = studio::saveFile({{"PNG", "png"}});
if (err) {
return;
}
// subsheet to png
const auto &img = model()->img();
const auto &s = *model()->activeSubSheet();
const auto &pal = model()->pal();
err = toPngFile(path, s, pal, img.bpp);
if (err) {
oxErrorf("Tilesheet export failed: {}", toStr(err));
}
}
void TileSheetEditorImGui::drawTileSheet(const geo::Vec2 &fbSize) noexcept {
const auto winPos = ImGui::GetWindowPos();
const auto fbSizei = geo::Size(static_cast<int>(fbSize.x), static_cast<int>(fbSize.y));
@@ -230,10 +270,10 @@ void TileSheetEditorImGui::drawTileSheet(const geo::Vec2 &fbSize) noexcept {
m_tileSheetEditor.draw();
glBindFramebuffer(GL_FRAMEBUFFER, 0);
ImGui::Image(
reinterpret_cast<void*>(m_framebuffer.color.id),
static_cast<ImVec2>(fbSize),
ImVec2(0, 1),
ImVec2(1, 0));
reinterpret_cast<void*>(m_framebuffer.color.id),
static_cast<ImVec2>(fbSize),
ImVec2(0, 1),
ImVec2(1, 0));
// handle input, this must come after drawing
const auto &io = ImGui::GetIO();
const auto mousePos = geo::Vec2(io.MousePos);
@@ -242,7 +282,7 @@ void TileSheetEditorImGui::drawTileSheet(const geo::Vec2 &fbSize) noexcept {
const auto wheelh = io.MouseWheelH;
if (wheel != 0) {
const auto zoomMod = ox::defines::OS == ox::OS::Darwin ?
io.KeySuper : core::buttonDown(m_ctx, core::Key::Mod_Ctrl);
io.KeySuper : core::buttonDown(m_ctx, core::Key::Mod_Ctrl);
m_tileSheetEditor.scrollV(fbSize, wheel, zoomMod);
}
if (wheelh != 0) {