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#include "app.hpp"
#include "floormat/main.hpp"
#include "src/tile-atlas.hpp"
#include <Magnum/GL/Renderer.h>
#include "imgui-raii.hpp"
namespace floormat {
using namespace floormat::imgui;
void app::init_imgui(Vector2i size)
{
if (!_imgui.context())
_imgui = ImGuiIntegration::Context(Vector2{size}, size, size);
else
_imgui.relayout(Vector2{size}, size, size);
}
void app::render_menu()
{
GL::Renderer::setBlendEquation(GL::Renderer::BlendEquation::Add, GL::Renderer::BlendEquation::Add);
GL::Renderer::setBlendFunction(GL::Renderer::BlendFunction::SourceAlpha, GL::Renderer::BlendFunction::OneMinusSourceAlpha);
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();
}
float app::draw_main_menu()
{
float main_menu_height = 0;
if (auto b = begin_main_menu())
{
if (auto b = begin_menu("File"))
{
#if 0
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");
ImGui::Separator();
#endif
bool do_quit = false;
ImGui::MenuItem("menu_quit", "Ctrl+Q", &do_quit);
if (do_quit)
do_key(key_quit, kmod_none);
}
if (auto b = begin_menu("Mode"))
{
const bool can_rotate = _editor.current_tile_editor() ? _editor.current_tile_editor()->can_rotate() : false;
bool b_none = false, b_floor = false, b_walls = false, b_rotate = false;
ImGui::MenuItem("Select", "1", &b_none);
ImGui::MenuItem("Floor", "2", &b_floor);
ImGui::MenuItem("Walls", "3", &b_walls);
ImGui::Separator();
ImGui::MenuItem("Rotate", "R", &b_rotate, can_rotate);
if (b_none)
do_key(key_mode_none);
else if (b_floor)
do_key(key_mode_floor);
else if (b_walls)
do_key(key_mode_walls);
if (b_rotate)
do_key(key_rotate_tile);
}
main_menu_height = ImGui::GetContentRegionMax().y;
}
return main_menu_height;
}
void app::draw_ui()
{
ImGui::GetIO().IniFilename = nullptr;
_imgui.newFrame();
ImGui::StyleColorsDark(&ImGui::GetStyle());
const float main_menu_height = draw_main_menu();
if (auto* ed = _editor.current_tile_editor(); ed != nullptr)
draw_editor_pane(*ed, main_menu_height);
draw_fps();
draw_cursor();
draw_tile_under_cursor();
ImGui::EndFrame();
}
static void draw_editor_pane_atlas(tile_editor& ed, StringView name, const std::shared_ptr<tile_atlas>& atlas)
{
constexpr Color4 color_perm_selected{1, 1, 1, .7f},
color_selected{1, 0.843f, 0, .8f},
color_hover{0, .8f, 1, .7f};
const float window_width = ImGui::GetWindowWidth() - 32;
char buf[128];
const auto& style = ImGui::GetStyle();
const auto N = atlas->num_tiles();
const auto click_event = [&] {
if (ImGui::IsItemClicked(ImGuiMouseButton_Right))
ed.select_tile_permutation(atlas);
else if (ImGui::IsItemClicked(ImGuiMouseButton_Middle))
ed.clear_selection();
};
const auto do_caption = [&] {
click_event();
if (ed.is_atlas_selected(atlas))
{
ImGui::SameLine();
ImGui::Text(" (selected)");
}
std::snprintf(buf, sizeof(buf), "%zu", N);
ImGui::SameLine(window_width - ImGui::CalcTextSize(buf).x - style.FramePadding.x - 4);
ImGui::Text("%s", buf);
};
if (const auto flags = ImGuiTreeNodeFlags_(ImGuiTreeNodeFlags_SpanFullWidth | ImGuiTreeNodeFlags_Framed);
auto b = tree_node(name.data(), flags))
{
do_caption();
[[maybe_unused]] const raii_wrapper vars[] = {
push_style_var(ImGuiStyleVar_FramePadding, {2, 2}),
push_style_color(ImGuiCol_ButtonHovered, color_hover),
};
const bool perm_selected = ed.is_permutation_selected(atlas);
constexpr std::size_t per_row = 8;
for (std::size_t i = 0; i < N; i++)
{
const bool selected = ed.is_tile_selected(atlas, i);
if (i > 0 && i % per_row == 0)
ImGui::NewLine();
[[maybe_unused]] const raii_wrapper vars[] = {
selected ? push_style_color(ImGuiCol_Button, color_selected) : raii_wrapper{},
selected ? push_style_color(ImGuiCol_ButtonHovered, color_selected) : raii_wrapper{},
perm_selected ? push_style_color(ImGuiCol_Button, color_perm_selected) : raii_wrapper{},
perm_selected ? push_style_color(ImGuiCol_ButtonHovered, color_perm_selected) : raii_wrapper{},
};
std::snprintf(buf, sizeof(buf), "##item_%zu", i);
const auto uv = atlas->texcoords_for_id(i);
constexpr ImVec2 size_2 = { TILE_SIZE[0]*.5f, TILE_SIZE[1]*.5f };
ImGui::ImageButton(buf, (void*)&atlas->texture(), size_2,
{ uv[3][0], uv[3][1] }, { uv[0][0], uv[0][1] });
if (ImGui::IsItemClicked(ImGuiMouseButton_Left))
ed.select_tile(atlas, i);
else
click_event();
ImGui::SameLine();
}
ImGui::NewLine();
}
else
do_caption();
}
void app::draw_editor_pane(tile_editor& ed, float main_menu_height)
{
const auto window_size = M->window_size();
if (const bool active = M->is_text_input_active();
ImGui::GetIO().WantTextInput != active)
active ? M->start_text_input() : M->stop_text_input();
[[maybe_unused]] const raii_wrapper vars[] = {
push_style_var(ImGuiStyleVar_WindowPadding, {8, 8}),
push_style_var(ImGuiStyleVar_WindowBorderSize, 0),
push_style_var(ImGuiStyleVar_FramePadding, {4, 4}),
push_style_color(ImGuiCol_WindowBg, {0, 0, 0, .5}),
push_style_color(ImGuiCol_FrameBg, {0, 0, 0, 0}),
};
const auto& style = ImGui::GetStyle();
if (main_menu_height > 0)
{
ImGui::SetNextWindowPos({0, main_menu_height+style.WindowPadding.y});
ImGui::SetNextFrameWantCaptureKeyboard(false);
ImGui::SetNextWindowSize({420, window_size[1] - main_menu_height - style.WindowPadding.y});
if (const auto flags = ImGuiWindowFlags_(ImGuiWindowFlags_NoDecoration | ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoSavedSettings);
auto b = begin_window({}, flags))
{
if (auto b = begin_list_box("##atlases", {-FLT_MIN, -1}))
{
for (const auto& [k, v] : ed)
{
draw_editor_pane_atlas(ed, k, v);
}
}
}
}
}
void app::draw_fps()
{
const auto frame_time = M->smoothed_dt();
char buf[16];
const double hz = frame_time > 1e-6f ? (int)std::round(10./(double)frame_time + .05) * .1 : 9999;
snprintf(buf, sizeof(buf), "%.1f FPS", hz);
const ImVec2 size = ImGui::CalcTextSize(buf);
ImDrawList& draw = *ImGui::GetForegroundDrawList();
draw.AddText({M->window_size()[0] - size.x - 4, 3}, ImGui::ColorConvertFloat4ToU32({0, 1, 0, 1}), buf);
}
void app::draw_tile_under_cursor()
{
if (!cursor.tile)
return;
char buf[64];
const auto coord = *cursor.tile;
const auto chunk = coord.chunk();
const auto local = coord.local();
snprintf(buf, sizeof(buf), "%hd:%hd - %hhu:%hhu", chunk.x, chunk.y, local.x, local.y);
const auto size = ImGui::CalcTextSize(buf);
const auto window_size = M->window_size();
ImDrawList& draw = *ImGui::GetForegroundDrawList();
draw.AddText({window_size[0]*.5f - size.x/2, 3}, (unsigned)-1, buf);
}
} // namespace floormat
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