1 files changed, 80 insertions, 0 deletions
diff --git a/editor/imgui-tiles.cpp b/editor/imgui-tiles.cpp
new file mode 100644
index 00000000..312c6d12
--- /dev/null
+++ b/editor/imgui-tiles.cpp
@@ -0,0 +1,80 @@
+#include "app.hpp"
+#include "src/tile-atlas.hpp"
+#include "floormat/main.hpp"
+#include "imgui-raii.hpp"
+#include "compat/format.hpp"
+#include <Magnum/Math/Color.h>
+
+namespace floormat {
+
+using namespace floormat::imgui;
+
+void app::draw_editor_tile_pane_atlas(tile_editor& ed, StringView name, const std::shared_ptr<tile_atlas>& atlas)
+{
+    const auto dpi = M->dpi_scale();
+    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 * dpi;
+    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();
+            text(" (selected)");
+        }
+        const auto len = snformat(buf, "{:d}"_cf, N);
+        ImGui::SameLine(window_width - ImGui::CalcTextSize(buf).x - style.FramePadding.x - 4*dpi);
+        text(buf, len);
+    };
+    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*dpi, 2*dpi}),
+            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{},
+            };
+
+            snformat(buf, "##item_{}"_cf, 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(), ImVec2(size_2.x * dpi, size_2.y * dpi),
+                               { 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();
+}
+
+} // namespace floormat