xenia/src/xenia/ui/imgui_drawer.cc
Sandy Carter c8e64da4eb filesystem: use std for PathExists
Remove custom platform implementation of `PathExists` and replace uses
with `std::filesystem::exists`.
2020-04-09 09:44:48 -05:00

306 lines
21 KiB
C++

/**
******************************************************************************
* Xenia : Xbox 360 Emulator Research Project *
******************************************************************************
* Copyright 2020 Ben Vanik. All rights reserved. *
* Released under the BSD license - see LICENSE in the root for more details. *
******************************************************************************
*/
#include "xenia/ui/imgui_drawer.h"
#include "third_party/imgui/imgui.h"
#include "xenia/base/assert.h"
#include "xenia/base/logging.h"
#include "xenia/ui/window.h"
namespace xe {
namespace ui {
// File: 'ProggyTiny.ttf' (35656 bytes)
// Exported using binary_to_compressed_c.cpp
const char kProggyTinyCompressedDataBase85[10950 + 1] =
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static_assert(sizeof(ImmediateVertex) == sizeof(ImDrawVert),
"Vertex types must match");
ImGuiDrawer::ImGuiDrawer(xe::ui::Window* window)
: window_(window), graphics_context_(window->context()) {
Initialize();
}
ImGuiDrawer::~ImGuiDrawer() {
if (internal_state_) {
ImGui::DestroyContext(internal_state_);
internal_state_ = nullptr;
}
}
void ImGuiDrawer::Initialize() {
// Setup ImGui internal state.
// This will give us state we can swap to the ImGui globals when in use.
internal_state_ = ImGui::CreateContext();
auto& io = ImGui::GetIO();
// TODO(gibbed): disable imgui.ini saving for now,
// imgui assumes paths are char* so we can't throw a good path at it on
// Windows.
io.IniFilename = nullptr;
SetupFont();
io.DeltaTime = 1.0f / 60.0f;
auto& style = ImGui::GetStyle();
style.ScrollbarRounding = 0;
style.WindowRounding = 0;
style.Colors[ImGuiCol_Text] = ImVec4(0.89f, 0.90f, 0.90f, 1.00f);
style.Colors[ImGuiCol_TextDisabled] = ImVec4(0.60f, 0.60f, 0.60f, 1.00f);
style.Colors[ImGuiCol_WindowBg] = ImVec4(0.00f, 0.06f, 0.00f, 1.00f);
style.Colors[ImGuiCol_ChildBg] = ImVec4(0.00f, 0.00f, 0.00f, 0.00f);
style.Colors[ImGuiCol_Border] = ImVec4(1.00f, 1.00f, 1.00f, 1.00f);
style.Colors[ImGuiCol_BorderShadow] = ImVec4(0.00f, 0.00f, 0.00f, 0.00f);
style.Colors[ImGuiCol_FrameBg] = ImVec4(0.80f, 0.80f, 0.80f, 0.30f);
style.Colors[ImGuiCol_FrameBgHovered] = ImVec4(0.90f, 0.80f, 0.80f, 0.40f);
style.Colors[ImGuiCol_FrameBgActive] = ImVec4(0.90f, 0.65f, 0.65f, 0.45f);
style.Colors[ImGuiCol_TitleBg] = ImVec4(0.00f, 0.40f, 0.00f, 1.00f);
style.Colors[ImGuiCol_TitleBgCollapsed] = ImVec4(0.00f, 0.33f, 0.00f, 1.00f);
style.Colors[ImGuiCol_TitleBgActive] = ImVec4(0.16f, 0.65f, 0.00f, 1.00f);
style.Colors[ImGuiCol_MenuBarBg] = ImVec4(0.00f, 0.35f, 0.00f, 1.00f);
style.Colors[ImGuiCol_ScrollbarBg] = ImVec4(0.00f, 0.40f, 0.11f, 0.59f);
style.Colors[ImGuiCol_ScrollbarGrab] = ImVec4(0.00f, 0.68f, 0.00f, 0.68f);
style.Colors[ImGuiCol_ScrollbarGrabHovered] =
ImVec4(0.00f, 1.00f, 0.15f, 0.62f);
style.Colors[ImGuiCol_ScrollbarGrabActive] =
ImVec4(0.00f, 0.91f, 0.09f, 0.40f);
style.Colors[ImGuiCol_PopupBg] = ImVec4(0.20f, 0.20f, 0.20f, 0.99f);
style.Colors[ImGuiCol_CheckMark] = ImVec4(0.74f, 0.90f, 0.72f, 0.50f);
style.Colors[ImGuiCol_SliderGrab] = ImVec4(1.00f, 1.00f, 1.00f, 0.30f);
style.Colors[ImGuiCol_SliderGrabActive] = ImVec4(0.34f, 0.75f, 0.11f, 1.00f);
style.Colors[ImGuiCol_Button] = ImVec4(0.15f, 0.56f, 0.11f, 0.60f);
style.Colors[ImGuiCol_ButtonHovered] = ImVec4(0.19f, 0.72f, 0.09f, 1.00f);
style.Colors[ImGuiCol_ButtonActive] = ImVec4(0.19f, 0.60f, 0.09f, 1.00f);
style.Colors[ImGuiCol_Header] = ImVec4(0.00f, 0.40f, 0.00f, 0.71f);
style.Colors[ImGuiCol_HeaderHovered] = ImVec4(0.00f, 0.60f, 0.26f, 0.80f);
style.Colors[ImGuiCol_HeaderActive] = ImVec4(0.00f, 0.75f, 0.00f, 0.80f);
style.Colors[ImGuiCol_Separator] = ImVec4(1.00f, 1.00f, 1.00f, 1.00f);
style.Colors[ImGuiCol_SeparatorHovered] = ImVec4(0.36f, 0.89f, 0.38f, 1.00f);
style.Colors[ImGuiCol_SeparatorActive] = ImVec4(0.13f, 0.50f, 0.11f, 1.00f);
style.Colors[ImGuiCol_ResizeGrip] = ImVec4(1.00f, 1.00f, 1.00f, 0.30f);
style.Colors[ImGuiCol_ResizeGripHovered] = ImVec4(1.00f, 1.00f, 1.00f, 0.60f);
style.Colors[ImGuiCol_ResizeGripActive] = ImVec4(1.00f, 1.00f, 1.00f, 0.90f);
style.Colors[ImGuiCol_PlotLines] = ImVec4(1.00f, 1.00f, 1.00f, 1.00f);
style.Colors[ImGuiCol_PlotLinesHovered] = ImVec4(0.90f, 0.70f, 0.00f, 1.00f);
style.Colors[ImGuiCol_PlotHistogram] = ImVec4(0.90f, 0.70f, 0.00f, 1.00f);
style.Colors[ImGuiCol_PlotHistogramHovered] =
ImVec4(1.00f, 0.60f, 0.00f, 1.00f);
style.Colors[ImGuiCol_TextSelectedBg] = ImVec4(0.00f, 1.00f, 0.00f, 0.21f);
style.Colors[ImGuiCol_ModalWindowDimBg] = ImVec4(0.20f, 0.20f, 0.20f, 0.35f);
io.KeyMap[ImGuiKey_Tab] = 0x09; // VK_TAB;
io.KeyMap[ImGuiKey_LeftArrow] = 0x25;
io.KeyMap[ImGuiKey_RightArrow] = 0x27;
io.KeyMap[ImGuiKey_UpArrow] = 0x26;
io.KeyMap[ImGuiKey_DownArrow] = 0x28;
io.KeyMap[ImGuiKey_Home] = 0x24;
io.KeyMap[ImGuiKey_End] = 0x23;
io.KeyMap[ImGuiKey_Delete] = 0x2E;
io.KeyMap[ImGuiKey_Backspace] = 0x08;
io.KeyMap[ImGuiKey_Enter] = 0x0D;
io.KeyMap[ImGuiKey_Escape] = 0x1B;
io.KeyMap[ImGuiKey_A] = 'A';
io.KeyMap[ImGuiKey_C] = 'C';
io.KeyMap[ImGuiKey_V] = 'V';
io.KeyMap[ImGuiKey_X] = 'X';
io.KeyMap[ImGuiKey_Y] = 'Y';
io.KeyMap[ImGuiKey_Z] = 'Z';
}
void ImGuiDrawer::SetupFont() {
auto& io = GetIO();
ImFontConfig font_config;
font_config.OversampleH = font_config.OversampleV = 1;
font_config.PixelSnapH = true;
static const ImWchar font_glyph_ranges[] = {
0x0020,
0x00FF, // Basic Latin + Latin Supplement
0,
};
io.Fonts->AddFontFromMemoryCompressedBase85TTF(
kProggyTinyCompressedDataBase85, 10.0f, &font_config, font_glyph_ranges);
// TODO(benvanik): jp font on other platforms?
// https://github.com/Koruri/kibitaki looks really good, but is 1.5MiB.
const char* jp_font_path = "C:\\Windows\\Fonts\\msgothic.ttc";
if (std::filesystem::exists(jp_font_path)) {
ImFontConfig jp_font_config;
jp_font_config.MergeMode = true;
jp_font_config.OversampleH = jp_font_config.OversampleV = 1;
jp_font_config.PixelSnapH = true;
jp_font_config.FontNo = 0;
io.Fonts->AddFontFromFileTTF(jp_font_path, 12.0f, &jp_font_config,
io.Fonts->GetGlyphRangesJapanese());
} else {
XELOGW("Unable to load japanese font; jp characters will be boxes");
}
unsigned char* pixels;
int width, height;
io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height);
font_texture_ = graphics_context_->immediate_drawer()->CreateTexture(
width, height, ImmediateTextureFilter::kLinear, true,
reinterpret_cast<uint8_t*>(pixels));
io.Fonts->TexID = reinterpret_cast<void*>(font_texture_->handle);
}
void ImGuiDrawer::RenderDrawLists(ImDrawData* data) {
auto drawer = graphics_context_->immediate_drawer();
// Handle cases of screen coordinates != from framebuffer coordinates (e.g.
// retina displays).
ImGuiIO& io = ImGui::GetIO();
float fb_height = io.DisplaySize.y * io.DisplayFramebufferScale.y;
data->ScaleClipRects(io.DisplayFramebufferScale);
const float width = io.DisplaySize.x;
const float height = io.DisplaySize.y;
drawer->Begin(static_cast<int>(width), static_cast<int>(height));
for (int i = 0; i < data->CmdListsCount; ++i) {
const auto cmd_list = data->CmdLists[i];
ImmediateDrawBatch batch;
batch.vertices =
reinterpret_cast<ImmediateVertex*>(cmd_list->VtxBuffer.Data);
batch.vertex_count = cmd_list->VtxBuffer.size();
batch.indices = cmd_list->IdxBuffer.Data;
batch.index_count = cmd_list->IdxBuffer.size();
drawer->BeginDrawBatch(batch);
int index_offset = 0;
for (int j = 0; j < cmd_list->CmdBuffer.size(); ++j) {
const auto& cmd = cmd_list->CmdBuffer[j];
ImmediateDraw draw;
draw.primitive_type = ImmediatePrimitiveType::kTriangles;
draw.count = cmd.ElemCount;
draw.index_offset = index_offset;
draw.texture_handle =
reinterpret_cast<uintptr_t>(cmd.TextureId) & ~kIgnoreAlpha;
draw.alpha_blend =
reinterpret_cast<uintptr_t>(cmd.TextureId) & kIgnoreAlpha ? false
: true;
draw.scissor = true;
draw.scissor_rect[0] = static_cast<int>(cmd.ClipRect.x);
draw.scissor_rect[1] = static_cast<int>(height - cmd.ClipRect.w);
draw.scissor_rect[2] = static_cast<int>(cmd.ClipRect.z - cmd.ClipRect.x);
draw.scissor_rect[3] = static_cast<int>(cmd.ClipRect.w - cmd.ClipRect.y);
drawer->Draw(draw);
index_offset += cmd.ElemCount;
}
drawer->EndDrawBatch();
}
drawer->End();
}
ImGuiIO& ImGuiDrawer::GetIO() {
ImGui::SetCurrentContext(internal_state_);
return ImGui::GetIO();
}
void ImGuiDrawer::RenderDrawLists() {
ImGui::SetCurrentContext(internal_state_);
auto draw_data = ImGui::GetDrawData();
if (draw_data) {
RenderDrawLists(draw_data);
}
}
void ImGuiDrawer::OnKeyDown(KeyEvent* e) {
auto& io = GetIO();
io.KeysDown[e->key_code()] = true;
switch (e->key_code()) {
case 16: {
io.KeyShift = true;
} break;
case 17: {
io.KeyCtrl = true;
} break;
}
}
void ImGuiDrawer::OnKeyUp(KeyEvent* e) {
auto& io = GetIO();
io.KeysDown[e->key_code()] = false;
switch (e->key_code()) {
case 16: {
io.KeyShift = false;
} break;
case 17: {
io.KeyCtrl = false;
} break;
}
}
void ImGuiDrawer::OnKeyChar(KeyEvent* e) {
auto& io = GetIO();
if (e->key_code() > 0 && e->key_code() < 0x10000) {
io.AddInputCharacter(e->key_code());
e->set_handled(true);
}
}
void ImGuiDrawer::OnMouseDown(MouseEvent* e) {
auto& io = GetIO();
io.MousePos = ImVec2(float(e->x()), float(e->y()));
switch (e->button()) {
case xe::ui::MouseEvent::Button::kLeft: {
io.MouseDown[0] = true;
} break;
case xe::ui::MouseEvent::Button::kRight: {
io.MouseDown[1] = true;
} break;
default: {
// Ignored.
} break;
}
}
void ImGuiDrawer::OnMouseMove(MouseEvent* e) {
auto& io = GetIO();
io.MousePos = ImVec2(float(e->x()), float(e->y()));
}
void ImGuiDrawer::OnMouseUp(MouseEvent* e) {
auto& io = GetIO();
io.MousePos = ImVec2(float(e->x()), float(e->y()));
switch (e->button()) {
case xe::ui::MouseEvent::Button::kLeft: {
io.MouseDown[0] = false;
} break;
case xe::ui::MouseEvent::Button::kRight: {
io.MouseDown[1] = false;
} break;
default: {
// Ignored.
} break;
}
}
void ImGuiDrawer::OnMouseWheel(MouseEvent* e) {
auto& io = GetIO();
io.MousePos = ImVec2(float(e->x()), float(e->y()));
io.MouseWheel += float(e->dy() / 120.0f);
}
} // namespace ui
} // namespace xe