PrusaSlicer-NonPlainar/src/slic3r/GUI/ImGuiWrapper.cpp
2019-04-01 14:28:39 +02:00

611 lines
19 KiB
C++

#include "ImGuiWrapper.hpp"
#include <cstdio>
#include <vector>
#include <cmath>
#include <stdexcept>
#include <boost/format.hpp>
#include <boost/log/trivial.hpp>
#include <wx/string.h>
#include <wx/event.h>
#include <wx/clipbrd.h>
#include <wx/debug.h>
#include <GL/glew.h>
#include <imgui/imgui_internal.h>
#include "libslic3r/libslic3r.h"
#include "libslic3r/Utils.hpp"
#include "GUI.hpp"
namespace Slic3r {
namespace GUI {
ImGuiWrapper::ImGuiWrapper()
: m_glyph_ranges(nullptr)
, m_font_size(18.0)
, m_font_texture(0)
, m_style_scaling(1.0)
, m_mouse_buttons(0)
, m_disabled(false)
, m_new_frame_open(false)
{
ImGui::CreateContext();
init_input();
init_style();
ImGui::GetIO().IniFilename = nullptr;
}
ImGuiWrapper::~ImGuiWrapper()
{
destroy_font();
ImGui::DestroyContext();
}
void ImGuiWrapper::set_language(const std::string &language)
{
if (m_new_frame_open) {
// ImGUI internally locks the font between NewFrame() and EndFrame()
// NewFrame() might've been called here because of input from the 3D scene;
// call EndFrame()
ImGui::EndFrame();
m_new_frame_open = false;
}
const ImWchar *ranges = nullptr;
size_t idx = language.find('_');
std::string lang = (idx == std::string::npos) ? language : language.substr(0, idx);
static const ImWchar ranges_latin2[] =
{
0x0020, 0x00FF, // Basic Latin + Latin Supplement
0x0100, 0x017F, // Latin Extended-A
0,
};
if (lang == "cs" || lang == "pl") {
ranges = ranges_latin2;
} else if (lang == "ru" || lang == "uk") {
ranges = ImGui::GetIO().Fonts->GetGlyphRangesCyrillic();
} else if (lang == "jp") {
ranges = ImGui::GetIO().Fonts->GetGlyphRangesJapanese();
} else if (lang == "kr") {
ranges = ImGui::GetIO().Fonts->GetGlyphRangesKorean();
} else if (lang == "zh") {
ranges = ImGui::GetIO().Fonts->GetGlyphRangesChineseSimplifiedCommon();
}
if (ranges != m_glyph_ranges) {
m_glyph_ranges = ranges;
destroy_font();
}
}
void ImGuiWrapper::set_display_size(float w, float h)
{
ImGuiIO& io = ImGui::GetIO();
io.DisplaySize = ImVec2(w, h);
io.DisplayFramebufferScale = ImVec2(1.0f, 1.0f);
}
void ImGuiWrapper::set_font_size(float font_size)
{
if (m_font_size != font_size) {
m_font_size = font_size;
destroy_font();
}
}
void ImGuiWrapper::set_style_scaling(float scaling)
{
if (!std::isnan(scaling) && !std::isinf(scaling) && scaling != m_style_scaling) {
ImGui::GetStyle().ScaleAllSizes(scaling / m_style_scaling);
m_style_scaling = scaling;
destroy_font();
}
}
bool ImGuiWrapper::update_mouse_data(wxMouseEvent& evt)
{
if (! display_initialized()) {
return false;
}
ImGuiIO& io = ImGui::GetIO();
io.MousePos = ImVec2((float)evt.GetX(), (float)evt.GetY());
io.MouseDown[0] = evt.LeftIsDown();
io.MouseDown[1] = evt.RightIsDown();
io.MouseDown[2] = evt.MiddleIsDown();
unsigned buttons = (evt.LeftIsDown() ? 1 : 0) | (evt.RightIsDown() ? 2 : 0) | (evt.MiddleIsDown() ? 4 : 0);
m_mouse_buttons = buttons;
new_frame();
return want_mouse();
}
bool ImGuiWrapper::update_key_data(wxKeyEvent &evt)
{
if (! display_initialized()) {
return false;
}
ImGuiIO& io = ImGui::GetIO();
if (evt.GetEventType() == wxEVT_CHAR) {
// Char event
const auto key = evt.GetUnicodeKey();
if (key != 0) {
io.AddInputCharacter(key);
}
new_frame();
return want_keyboard() || want_text_input();
} else {
// Key up/down event
int key = evt.GetKeyCode();
wxCHECK_MSG(key >= 0 && key < IM_ARRAYSIZE(io.KeysDown), false, "Received invalid key code");
io.KeysDown[key] = evt.GetEventType() == wxEVT_KEY_DOWN;
io.KeyShift = evt.ShiftDown();
io.KeyCtrl = evt.ControlDown();
io.KeyAlt = evt.AltDown();
io.KeySuper = evt.MetaDown();
new_frame();
return want_keyboard() || want_text_input();
}
}
void ImGuiWrapper::new_frame()
{
printf("ImGuiWrapper: new_frame()\n");
if (m_new_frame_open) {
return;
}
if (m_font_texture == 0) {
init_font();
}
ImGui::NewFrame();
m_new_frame_open = true;
}
void ImGuiWrapper::render()
{
ImGui::Render();
render_draw_data(ImGui::GetDrawData());
m_new_frame_open = false;
}
void ImGuiWrapper::set_next_window_pos(float x, float y, int flag)
{
ImGui::SetNextWindowPos(ImVec2(x, y), (ImGuiCond)flag);
ImGui::SetNextWindowSize(ImVec2(0.0, 0.0));
}
void ImGuiWrapper::set_next_window_bg_alpha(float alpha)
{
ImGui::SetNextWindowBgAlpha(alpha);
}
bool ImGuiWrapper::begin(const std::string &name, int flags)
{
return ImGui::Begin(name.c_str(), nullptr, (ImGuiWindowFlags)flags);
}
bool ImGuiWrapper::begin(const wxString &name, int flags)
{
return begin(into_u8(name), flags);
}
void ImGuiWrapper::end()
{
ImGui::End();
}
bool ImGuiWrapper::button(const wxString &label)
{
auto label_utf8 = into_u8(label);
return ImGui::Button(label_utf8.c_str());
}
bool ImGuiWrapper::radio_button(const wxString &label, bool active)
{
auto label_utf8 = into_u8(label);
return ImGui::RadioButton(label_utf8.c_str(), active);
}
bool ImGuiWrapper::input_double(const std::string &label, const double &value, const std::string &format)
{
return ImGui::InputDouble(label.c_str(), const_cast<double*>(&value), 0.0f, 0.0f, format.c_str());
}
bool ImGuiWrapper::input_vec3(const std::string &label, const Vec3d &value, float width, const std::string &format)
{
bool value_changed = false;
ImGui::BeginGroup();
for (int i = 0; i < 3; ++i)
{
std::string item_label = (i == 0) ? "X" : ((i == 1) ? "Y" : "Z");
ImGui::PushID(i);
ImGui::PushItemWidth(width);
value_changed |= ImGui::InputDouble(item_label.c_str(), const_cast<double*>(&value(i)), 0.0f, 0.0f, format.c_str());
ImGui::PopID();
}
ImGui::EndGroup();
return value_changed;
}
bool ImGuiWrapper::checkbox(const wxString &label, bool &value)
{
auto label_utf8 = into_u8(label);
return ImGui::Checkbox(label_utf8.c_str(), &value);
}
void ImGuiWrapper::text(const char *label)
{
ImGui::Text(label, NULL);
}
void ImGuiWrapper::text(const std::string &label)
{
this->text(label.c_str());
}
void ImGuiWrapper::text(const wxString &label)
{
auto label_utf8 = into_u8(label);
this->text(label_utf8.c_str());
}
bool ImGuiWrapper::combo(const wxString& label, const std::vector<std::string>& options, int& selection)
{
// this is to force the label to the left of the widget:
text(label);
ImGui::SameLine();
int selection_out = -1;
bool res = false;
const char *selection_str = selection < options.size() ? options[selection].c_str() : "";
if (ImGui::BeginCombo("", selection_str)) {
for (int i = 0; i < options.size(); i++) {
if (ImGui::Selectable(options[i].c_str(), i == selection)) {
selection_out = i;
}
}
ImGui::EndCombo();
res = true;
}
selection = selection_out;
return res;
}
ImVec2 ImGuiWrapper::calc_text_size(const wxString &text)
{
auto text_utf8 = into_u8(text);
return ImGui::CalcTextSize(text_utf8.c_str());
}
void ImGuiWrapper::disabled_begin(bool disabled)
{
wxCHECK_RET(!m_disabled, "ImGUI: Unbalanced disabled_begin() call");
if (disabled) {
ImGui::PushItemFlag(ImGuiItemFlags_Disabled, true);
ImGui::PushStyleVar(ImGuiStyleVar_Alpha, ImGui::GetStyle().Alpha * 0.5f);
m_disabled = true;
}
}
void ImGuiWrapper::disabled_end()
{
if (m_disabled) {
ImGui::PopItemFlag();
ImGui::PopStyleVar();
m_disabled = false;
}
}
bool ImGuiWrapper::want_mouse() const
{
return ImGui::GetIO().WantCaptureMouse;
}
bool ImGuiWrapper::want_keyboard() const
{
return ImGui::GetIO().WantCaptureKeyboard;
}
bool ImGuiWrapper::want_text_input() const
{
return ImGui::GetIO().WantTextInput;
}
bool ImGuiWrapper::want_any_input() const
{
const auto io = ImGui::GetIO();
return io.WantCaptureMouse || io.WantCaptureKeyboard || io.WantTextInput;
}
void ImGuiWrapper::init_font()
{
printf("ImGuiWrapper: init_font()\n");
const float font_size = m_font_size * m_style_scaling;
destroy_font();
ImGuiIO& io = ImGui::GetIO();
io.Fonts->Clear();
ImFont* font = io.Fonts->AddFontFromFileTTF((Slic3r::resources_dir() + "/fonts/NotoSans-Regular.ttf").c_str(), font_size, nullptr, m_glyph_ranges);
if (font == nullptr) {
font = io.Fonts->AddFontDefault();
if (font == nullptr) {
throw std::runtime_error("ImGui: Could not load deafult font");
}
}
// Build texture atlas
unsigned char* pixels;
int width, height;
io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height); // Load as RGBA 32-bits (75% of the memory is wasted, but default font is so small) because it is more likely to be compatible with user's existing shaders. If your ImTextureId represent a higher-level concept than just a GL texture id, consider calling GetTexDataAsAlpha8() instead to save on GPU memory.
// Upload texture to graphics system
GLint last_texture;
glGetIntegerv(GL_TEXTURE_BINDING_2D, &last_texture);
glGenTextures(1, &m_font_texture);
glBindTexture(GL_TEXTURE_2D, m_font_texture);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, pixels);
// Store our identifier
io.Fonts->TexID = (ImTextureID)(intptr_t)m_font_texture;
// Restore state
glBindTexture(GL_TEXTURE_2D, last_texture);
}
void ImGuiWrapper::init_input()
{
ImGuiIO& io = ImGui::GetIO();
// Keyboard mapping. ImGui will use those indices to peek into the io.KeysDown[] array.
io.KeyMap[ImGuiKey_Tab] = WXK_TAB;
io.KeyMap[ImGuiKey_LeftArrow] = WXK_LEFT;
io.KeyMap[ImGuiKey_RightArrow] = WXK_RIGHT;
io.KeyMap[ImGuiKey_UpArrow] = WXK_UP;
io.KeyMap[ImGuiKey_DownArrow] = WXK_DOWN;
io.KeyMap[ImGuiKey_PageUp] = WXK_PAGEUP;
io.KeyMap[ImGuiKey_PageDown] = WXK_PAGEDOWN;
io.KeyMap[ImGuiKey_Home] = WXK_HOME;
io.KeyMap[ImGuiKey_End] = WXK_END;
io.KeyMap[ImGuiKey_Insert] = WXK_INSERT;
io.KeyMap[ImGuiKey_Delete] = WXK_DELETE;
io.KeyMap[ImGuiKey_Backspace] = WXK_BACK;
io.KeyMap[ImGuiKey_Space] = WXK_SPACE;
io.KeyMap[ImGuiKey_Enter] = WXK_RETURN;
io.KeyMap[ImGuiKey_Escape] = WXK_ESCAPE;
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';
// Don't let imgui special-case Mac, wxWidgets already do that
io.ConfigMacOSXBehaviors = false;
// Setup clipboard interaction callbacks
io.SetClipboardTextFn = clipboard_set;
io.GetClipboardTextFn = clipboard_get;
io.ClipboardUserData = this;
}
void ImGuiWrapper::init_style()
{
ImGuiStyle &style = ImGui::GetStyle();
auto set_color = [&](ImGuiCol_ col, unsigned hex_color) {
style.Colors[col] = ImVec4(
((hex_color >> 24) & 0xff) / 255.0f,
((hex_color >> 16) & 0xff) / 255.0f,
((hex_color >> 8) & 0xff) / 255.0f,
(hex_color & 0xff) / 255.0f);
};
static const unsigned COL_GREY_DARK = 0x444444ff;
static const unsigned COL_GREY_LIGHT = 0x666666ff;
static const unsigned COL_ORANGE_DARK = 0xc16737ff;
static const unsigned COL_ORANGE_LIGHT = 0xff7d38ff;
// Generics
set_color(ImGuiCol_TitleBgActive, COL_ORANGE_DARK);
set_color(ImGuiCol_FrameBg, COL_GREY_DARK);
set_color(ImGuiCol_FrameBgHovered, COL_GREY_LIGHT);
set_color(ImGuiCol_FrameBgActive, COL_GREY_LIGHT);
// Text selection
set_color(ImGuiCol_TextSelectedBg, COL_ORANGE_DARK);
// Buttons
set_color(ImGuiCol_Button, COL_ORANGE_DARK);
set_color(ImGuiCol_ButtonHovered, COL_ORANGE_LIGHT);
set_color(ImGuiCol_ButtonActive, COL_ORANGE_LIGHT);
// Checkbox
set_color(ImGuiCol_CheckMark, COL_ORANGE_LIGHT);
// ComboBox items
set_color(ImGuiCol_Header, COL_ORANGE_DARK);
set_color(ImGuiCol_HeaderHovered, COL_ORANGE_LIGHT);
set_color(ImGuiCol_HeaderActive, COL_ORANGE_LIGHT);
// Slider
set_color(ImGuiCol_SliderGrab, COL_ORANGE_DARK);
set_color(ImGuiCol_SliderGrabActive, COL_ORANGE_LIGHT);
}
void ImGuiWrapper::render_draw_data(ImDrawData *draw_data)
{
// Avoid rendering when minimized, scale coordinates for retina displays (screen coordinates != framebuffer coordinates)
ImGuiIO& io = ImGui::GetIO();
int fb_width = (int)(draw_data->DisplaySize.x * io.DisplayFramebufferScale.x);
int fb_height = (int)(draw_data->DisplaySize.y * io.DisplayFramebufferScale.y);
if (fb_width == 0 || fb_height == 0)
return;
draw_data->ScaleClipRects(io.DisplayFramebufferScale);
// We are using the OpenGL fixed pipeline to make the example code simpler to read!
// Setup render state: alpha-blending enabled, no face culling, no depth testing, scissor enabled, vertex/texcoord/color pointers, polygon fill.
GLint last_texture; glGetIntegerv(GL_TEXTURE_BINDING_2D, &last_texture);
GLint last_polygon_mode[2]; glGetIntegerv(GL_POLYGON_MODE, last_polygon_mode);
GLint last_viewport[4]; glGetIntegerv(GL_VIEWPORT, last_viewport);
GLint last_scissor_box[4]; glGetIntegerv(GL_SCISSOR_BOX, last_scissor_box);
glPushAttrib(GL_ENABLE_BIT | GL_COLOR_BUFFER_BIT | GL_TRANSFORM_BIT);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glDisable(GL_CULL_FACE);
glDisable(GL_DEPTH_TEST);
glDisable(GL_LIGHTING);
glDisable(GL_COLOR_MATERIAL);
glEnable(GL_SCISSOR_TEST);
glEnableClientState(GL_VERTEX_ARRAY);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
glEnableClientState(GL_COLOR_ARRAY);
glEnable(GL_TEXTURE_2D);
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
GLint texture_env_mode = GL_MODULATE;
glGetTexEnviv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, &texture_env_mode);
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
//glUseProgram(0); // You may want this if using this code in an OpenGL 3+ context where shaders may be bound
// Setup viewport, orthographic projection matrix
// Our visible imgui space lies from draw_data->DisplayPps (top left) to draw_data->DisplayPos+data_data->DisplaySize (bottom right). DisplayMin is typically (0,0) for single viewport apps.
glViewport(0, 0, (GLsizei)fb_width, (GLsizei)fb_height);
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glLoadIdentity();
glOrtho(draw_data->DisplayPos.x, draw_data->DisplayPos.x + draw_data->DisplaySize.x, draw_data->DisplayPos.y + draw_data->DisplaySize.y, draw_data->DisplayPos.y, -1.0f, +1.0f);
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
glLoadIdentity();
// Render command lists
ImVec2 pos = draw_data->DisplayPos;
for (int n = 0; n < draw_data->CmdListsCount; n++)
{
const ImDrawList* cmd_list = draw_data->CmdLists[n];
const ImDrawVert* vtx_buffer = cmd_list->VtxBuffer.Data;
const ImDrawIdx* idx_buffer = cmd_list->IdxBuffer.Data;
glVertexPointer(2, GL_FLOAT, sizeof(ImDrawVert), (const GLvoid*)((const char*)vtx_buffer + IM_OFFSETOF(ImDrawVert, pos)));
glTexCoordPointer(2, GL_FLOAT, sizeof(ImDrawVert), (const GLvoid*)((const char*)vtx_buffer + IM_OFFSETOF(ImDrawVert, uv)));
glColorPointer(4, GL_UNSIGNED_BYTE, sizeof(ImDrawVert), (const GLvoid*)((const char*)vtx_buffer + IM_OFFSETOF(ImDrawVert, col)));
for (int cmd_i = 0; cmd_i < cmd_list->CmdBuffer.Size; cmd_i++)
{
const ImDrawCmd* pcmd = &cmd_list->CmdBuffer[cmd_i];
if (pcmd->UserCallback)
{
// User callback (registered via ImDrawList::AddCallback)
pcmd->UserCallback(cmd_list, pcmd);
}
else
{
ImVec4 clip_rect = ImVec4(pcmd->ClipRect.x - pos.x, pcmd->ClipRect.y - pos.y, pcmd->ClipRect.z - pos.x, pcmd->ClipRect.w - pos.y);
if (clip_rect.x < fb_width && clip_rect.y < fb_height && clip_rect.z >= 0.0f && clip_rect.w >= 0.0f)
{
// Apply scissor/clipping rectangle
glScissor((int)clip_rect.x, (int)(fb_height - clip_rect.w), (int)(clip_rect.z - clip_rect.x), (int)(clip_rect.w - clip_rect.y));
// Bind texture, Draw
glBindTexture(GL_TEXTURE_2D, (GLuint)(intptr_t)pcmd->TextureId);
glDrawElements(GL_TRIANGLES, (GLsizei)pcmd->ElemCount, sizeof(ImDrawIdx) == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT, idx_buffer);
}
}
idx_buffer += pcmd->ElemCount;
}
}
// Restore modified state
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, texture_env_mode);
glDisableClientState(GL_COLOR_ARRAY);
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
glDisableClientState(GL_VERTEX_ARRAY);
glBindTexture(GL_TEXTURE_2D, (GLuint)last_texture);
glMatrixMode(GL_MODELVIEW);
glPopMatrix();
glMatrixMode(GL_PROJECTION);
glPopMatrix();
glPopAttrib();
glPolygonMode(GL_FRONT, (GLenum)last_polygon_mode[0]); glPolygonMode(GL_BACK, (GLenum)last_polygon_mode[1]);
glViewport(last_viewport[0], last_viewport[1], (GLsizei)last_viewport[2], (GLsizei)last_viewport[3]);
glScissor(last_scissor_box[0], last_scissor_box[1], (GLsizei)last_scissor_box[2], (GLsizei)last_scissor_box[3]);
}
bool ImGuiWrapper::display_initialized() const
{
const ImGuiIO& io = ImGui::GetIO();
return io.DisplaySize.x >= 0.0f && io.DisplaySize.y >= 0.0f;
}
void ImGuiWrapper::destroy_font()
{
if (m_font_texture != 0) {
ImGuiIO& io = ImGui::GetIO();
io.Fonts->TexID = 0;
glDeleteTextures(1, &m_font_texture);
m_font_texture = 0;
}
}
const char* ImGuiWrapper::clipboard_get(void* user_data)
{
ImGuiWrapper *self = reinterpret_cast<ImGuiWrapper*>(user_data);
const char* res = "";
if (wxTheClipboard->Open()) {
if (wxTheClipboard->IsSupported(wxDF_TEXT)) {
wxTextDataObject data;
wxTheClipboard->GetData(data);
if (data.GetTextLength() > 0) {
self->m_clipboard_text = into_u8(data.GetText());
res = self->m_clipboard_text.c_str();
}
}
wxTheClipboard->Close();
}
return res;
}
void ImGuiWrapper::clipboard_set(void* /* user_data */, const char* text)
{
if (wxTheClipboard->Open()) {
wxTheClipboard->SetData(new wxTextDataObject(wxString::FromUTF8(text))); // object owned by the clipboard
wxTheClipboard->Close();
}
}
} // namespace GUI
} // namespace Slic3r