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#include "app.hpp"
#include <Magnum/GL/Renderer.h>
#include <Magnum/ImGuiIntegration/Integration.h>
#include <Magnum/Math/Color.h>
namespace floormat {
constexpr inline auto noop = []{};
struct raii_wrapper final
{
using F = void(*)(void);
raii_wrapper(F fn) : dtor{fn} {}
raii_wrapper() = default;
~raii_wrapper() { if (dtor) dtor(); }
raii_wrapper(const raii_wrapper&) = delete;
raii_wrapper& operator=(const raii_wrapper&) = delete;
raii_wrapper& operator=(raii_wrapper&&) = delete;
raii_wrapper(raii_wrapper&& other) noexcept : dtor{other.dtor} { other.dtor = nullptr; }
inline operator bool() const noexcept { return dtor != nullptr; }
F dtor = nullptr;
};
constexpr inline const auto* imgui_name = "floormat editor";
[[nodiscard]] static raii_wrapper begin_window(int flags = 0) {
if (ImGui::Begin(imgui_name, nullptr, flags))
return {&ImGui::End};
else
return {};
}
[[nodiscard]] static raii_wrapper begin_main_menu() {
if (ImGui::BeginMainMenuBar())
return {&ImGui::EndMainMenuBar};
else
return {};
}
[[nodiscard]] static raii_wrapper begin_menu(const char* name, bool enabled = true) {
if (ImGui::BeginMenu(name, enabled))
return {&ImGui::EndMenu};
else
return {};
}
[[nodiscard]] static raii_wrapper begin_list_box(const char* name, ImVec2 size = {}) {
if (ImGui::BeginListBox(name, size))
return {&ImGui::EndListBox};
else
return {};
}
[[nodiscard]] static raii_wrapper tree_node(const char* name) {
if (ImGui::TreeNode(name))
return {&ImGui::TreePop};
else
return {};
}
[[nodiscard]] static raii_wrapper push_style_var(ImGuiStyleVar_ var, Vector2 value)
{
ImGui::PushStyleVar(var, {value[0], value[1]});
return {[]{ ImGui::PopStyleVar(); }};
}
[[nodiscard]] static raii_wrapper push_style_var(ImGuiStyleVar_ var, float value)
{
ImGui::PushStyleVar(var, value);
return {[]{ ImGui::PopStyleVar(); }};
}
[[nodiscard]] static raii_wrapper push_style_color(ImGuiCol_ var, const Color4& value)
{
ImGui::PushStyleColor(var, {value[0], value[1], value[2], value[3]});
return {[]{ ImGui::PopStyleColor(); }};
}
void app::setup_menu()
{
GL::Renderer::setBlendEquation(GL::Renderer::BlendEquation::Add, GL::Renderer::BlendEquation::Add);
GL::Renderer::setBlendFunction(GL::Renderer::BlendFunction::SourceAlpha, GL::Renderer::BlendFunction::OneMinusSourceAlpha);
}
void app::display_menu()
{
GL::Renderer::enable(GL::Renderer::Feature::Blending);
GL::Renderer::enable(GL::Renderer::Feature::ScissorTest);
GL::Renderer::disable(GL::Renderer::Feature::FaceCulling);
GL::Renderer::disable(GL::Renderer::Feature::DepthTest);
_imgui.drawFrame();
GL::Renderer::enable(GL::Renderer::Feature::ScissorTest);
}
void app::draw_menu()
{
_imgui.newFrame();
if (ImGui::GetIO().WantTextInput && !isTextInputActive())
startTextInput();
else if (!ImGui::GetIO().WantTextInput && isTextInputActive())
stopTextInput();
auto& style = ImGui::GetStyle();
ImGui::StyleColorsDark(&style);
style.WindowPadding = {8, 8};
style.WindowBorderSize = {};
style.Colors[ImGuiCol_WindowBg] = {0, 0, 0, .5};
style.Colors[ImGuiCol_FrameBg] = {0, 0, 0, 0};
ImVec2 main_menu_pos;
if (auto b = begin_main_menu())
{
if (auto b = begin_menu("File"))
{
ImGui::MenuItem("Open", "Ctrl+O");
ImGui::MenuItem("Recent");
ImGui::Separator();
ImGui::MenuItem("Save", "Ctrl+S");
ImGui::MenuItem("Save as...", "Ctrl+Shift+S");
ImGui::Separator();
ImGui::MenuItem("Close");
}
if (auto b = begin_menu("Mode"))
{
ImGui::MenuItem("Select", "F1", _editor.mode() == editor_mode::select);
ImGui::MenuItem("Floors", "F2", _editor.mode() == editor_mode::floors);
ImGui::MenuItem("Walls", "F3", _editor.mode() == editor_mode::walls);
}
main_menu_pos = ImGui::GetContentRegionMax();
}
if (main_menu_pos.y > 0)
{
ImGui::SetNextWindowPos({0, main_menu_pos.y+style.WindowPadding.y});
ImGui::SetNextFrameWantCaptureKeyboard(false);
ImGui::SetNextWindowSize({450, windowSize()[1] - main_menu_pos.y - style.WindowPadding.y*2});
if (auto b = begin_window(ImGuiWindowFlags_NoDecoration | ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoSavedSettings))
{
ImGui::Text("Items:");
//ImGui::SetNextWindowBgAlpha(.2f);
if (auto b = begin_list_box("##tiles", {-FLT_MIN, -1}))
{
for (const auto& [k, v] : _editor.floors())
{
const std::size_t N = v->num_tiles().product();
if (auto b = tree_node(k.data()))
{
auto c = push_style_var(ImGuiStyleVar_FramePadding, {1, 1});
auto c2 = push_style_var(ImGuiStyleVar_FrameBorderSize, 3);
auto c3 = push_style_color(ImGuiCol_Button, {1, 1, 1, 1});
constexpr std::size_t per_row = 8;
for (std::size_t i = 0; i < N; i++)
{
if (i > 0 && i % per_row == 0)
ImGui::NewLine();
char buf[64];
sprintf(buf, "##item_%zu", i);
const auto uv = v->texcoords_for_id(i);
ImGui::ImageButton(buf, (void*)&v->texture(), {TILE_SIZE[0]/2, TILE_SIZE[1]/2},
{ uv[3][0], uv[3][1] }, { uv[0][0], uv[0][1] });
if (ImGui::IsItemClicked())
{
printf("clicked %s %zu\n", buf+2, i);
fflush(stdout);
}
ImGui::SameLine();
}
ImGui::NewLine();
}
}
}
}
}
}
} // namespace floormat
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