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MainWindow.cpp
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/*
* Copyright (c) 2024 pongasoft
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*
* @author Yan Pujante
*/
#include <imgui.h>
#include <misc/cpp/imgui_stdlib.h>
#include <GLFW/glfw3.h>
#include "MainWindow.h"
#include "gui/WstGui.h"
#include "JetBrainsMono-Regular.cpp"
#include "IconsFontWGPUShaderToy.h"
#include "IconsFontWGPUShaderToy.cpp"
#include "Errors.h"
#include "utils/DataManager.h"
#include <iostream>
#include <ranges>
#include <utility>
#include <emscripten.h>
#include <version.h>
namespace shader_toy {
extern "C" {
using OnFileHandler = int (*)(MainWindow *iMainWindow, char const *iName);
using OnNewContentHandler = void (*)(MainWindow *iMainWindow, int iToken, char const *iName, char const *iContent, char const *iError);
using OnBeforeUnloadHandler = void (*)(MainWindow *iMainWindow);
void wgpu_shader_toy_install_handlers(MainWindow *iMainWindow,
OnNewContentHandler iOnNewFileHandler,
OnBeforeUnloadHandler iOnBeforeUnloadHandler,
OnFileHandler iOnFileHandler);
void wgpu_shader_toy_uninstall_handlers();
void wgpu_shader_toy_open_file_dialog();
void wgpu_shader_toy_export_content(char const *iFilename, char const *iContent);
void wgpu_shader_toy_import_from_url(int iToken, char const *iURL);
void wgpu_shader_toy_print_stack_trace(char const *iMessage);
}
namespace callbacks {
//------------------------------------------------------------------------
// callbacks::OnFileHandler
//------------------------------------------------------------------------
int OnFileCallback(MainWindow *iMainWindow, char const *iName)
{
if(iMainWindow)
return iMainWindow->onFile(iName);
else
return 0;
}
//------------------------------------------------------------------------
// callbacks::OnNewContentCallback
//------------------------------------------------------------------------
void OnNewContentCallback(MainWindow *iMainWindow, int iToken, char const *iName, char const *iContent, char const *iError)
{
if(iMainWindow)
iMainWindow->onNewContent(iToken, iName, iContent, iError);
}
//------------------------------------------------------------------------
// callbacks::OnBeforeUnload
//------------------------------------------------------------------------
void OnBeforeUnload(MainWindow *iMainWindow)
{
if(iMainWindow)
iMainWindow->maybeSaveState();
}
}
// Some shader examples
extern std::vector<Shader> kBuiltInFragmentShaderExamples;
extern std::vector<std::pair<std::string, std::string>> kExternalFragmentShaderExamples;
// Empty shader
auto constexpr kEmptyShader = R"(@fragment
fn fragmentMain(@builtin(position) pos: vec4f) -> @location(0) vec4f {
return vec4f(0.5, 0.5, 0.5, 1);
}
)";
//// kAspectRatios
//static std::vector<std::pair<std::string, Window::AspectRatio>> kAspectRatios{
// {"Free", Window::AspectRatio{GLFW_DONT_CARE, GLFW_DONT_CARE}},
// {"1x1", Window::AspectRatio{1, 1}},
// {"16x9", Window::AspectRatio{16, 9}},
// {"9x16", Window::AspectRatio{9, 16}},
// {"4x3", Window::AspectRatio{4, 3}},
// {"3x4", Window::AspectRatio{3, 4}},
//};
namespace impl {
//------------------------------------------------------------------------
// impl::mergeFontAwesome
//------------------------------------------------------------------------
static void mergeFontAwesome(float iSize)
{
static auto kFontData = utils::DataManager::loadCompressedBase85(IconsFontWGPUShaderToy_compressed_data_base85);
auto &io = ImGui::GetIO();
static const ImWchar icons_ranges[] = {fa::kMin, fa::kMax16, 0};
ImFontConfig icons_config;
icons_config.GlyphOffset = {0, 1};
icons_config.MergeMode = true;
icons_config.PixelSnapH = true;
icons_config.OversampleH = 2;
icons_config.FontDataOwnedByAtlas = false;
icons_config.GlyphMinAdvanceX = iSize; // to make it monospace
icons_config.FontDataOwnedByAtlas = false;
io.Fonts->AddFontFromMemoryTTF(kFontData.data(),
static_cast<int>(kFontData.size()),
iSize,
&icons_config,
icons_ranges);
}
}
//------------------------------------------------------------------------
// JSSetStyle
//------------------------------------------------------------------------
EM_JS(void, JSSetStyle, (bool iDarkStyle), { Module.wst_set_style(iDarkStyle); })
//------------------------------------------------------------------------
// JSSetLayout
//------------------------------------------------------------------------
EM_JS(void, JSSetLayout, (bool iManualLayout, int iLeftPaneWidth, int iRightPaneWidth), {
Module.wst_set_layout(iManualLayout, iLeftPaneWidth, iRightPaneWidth);
})
//------------------------------------------------------------------------
// JSSetWindowOrder
//------------------------------------------------------------------------
EM_JS(void, JSSetWindowOrder, (GLFWwindow *iLeftWindow, GLFWwindow *iRightWindow), {
Module.wst_set_window_order(iLeftWindow, iRightWindow);}
)
// wst_set_window_order
//------------------------------------------------------------------------
// MainWindow::MainWindow
//------------------------------------------------------------------------
MainWindow::MainWindow(std::shared_ptr<GPU> iGPU, Window::Args const &iWindowArgs,
Args const &iMainWindowArgs) : ImGuiWindow(std::move(iGPU), iWindowArgs),
fPreferences{iMainWindowArgs.preferences},
fDefaultState{iMainWindowArgs.defaultState},
fLastComputedState{Preferences::serialize(iMainWindowArgs.state)},
fLastComputedStateTime{glfwGetTime()},
fFragmentShaderWindow{
std::make_unique<FragmentShaderWindow>(fGPU,
iMainWindowArgs.fragmentShaderWindow)
}
{
initFromStateAction(iMainWindowArgs.state);
setFontSize(iMainWindowArgs.state.fSettings.fFontSize);
fSetFontSizeRequest = std::nullopt;
wgpu_shader_toy_install_handlers(this,
callbacks::OnNewContentCallback,
callbacks::OnBeforeUnload,
callbacks::OnFileCallback);
}
//------------------------------------------------------------------------
// MainWindow::findFragmentShaderByName
//------------------------------------------------------------------------
std::shared_ptr<FragmentShader> MainWindow::findFragmentShaderByName(std::string const &iName) const
{
auto it = std::find_if(fFragmentShaders.begin(),
fFragmentShaders.end(),
[&iName](auto &f) { return f->getName() == iName; });
if(it != fFragmentShaders.end())
return *it;
else
return nullptr;
}
//------------------------------------------------------------------------
// MainWindow::setFontSize
//------------------------------------------------------------------------
void MainWindow::setFontSize(float iFontSize)
{
static auto kFontData = utils::DataManager::loadCompressedBase85(JetBrainsMonoRegular_compressed_data_base85);
if(fFontSize == iFontSize)
return;
fFontSize = iFontSize;
auto &io = ImGui::GetIO();
io.Fonts->Clear();
ImFontConfig fontConfig;
fontConfig.OversampleH = 2;
float fontScale; float dummy;
glfwGetWindowContentScale(fWindow, &fontScale, &dummy);
auto const size = fFontSize * fontScale;
fontConfig.FontDataOwnedByAtlas = false;
io.Fonts->AddFontFromMemoryTTF(kFontData.data(), static_cast<int>(kFontData.size()), size, &fontConfig);
impl::mergeFontAwesome(size);
io.FontGlobalScale = 1.0f / fontScale;
}
//------------------------------------------------------------------------
// MainWindow::requestFontSize
//------------------------------------------------------------------------
void MainWindow::requestFontSize(float iFontSize)
{
iFontSize = std::clamp(iFontSize, 8.0f, 30.0f);
if(fFontSize != iFontSize)
fSetFontSizeRequest = iFontSize;
}
//------------------------------------------------------------------------
// MainWindow::~MainWindow
//------------------------------------------------------------------------
MainWindow::~MainWindow()
{
wgpu_shader_toy_uninstall_handlers();
}
namespace impl {
//------------------------------------------------------------------------
// impl::lineCount
//------------------------------------------------------------------------
inline long lineCount(std::string const &s)
{
return std::count(s.begin(), s.end(), '\n');
}
}
#ifndef NDEBUG
static bool kShowDemoWindow = false;
#endif
//------------------------------------------------------------------------
// MainWindow::newDialog
//------------------------------------------------------------------------
template<typename State>
gui::Dialog<State> &MainWindow::newDialog(std::string iTitle, State const &iState)
{
auto dialog = std::make_unique<gui::Dialog<State>>(std::move(iTitle), iState);
auto &res = *dialog.get();
fDialogs.emplace_back(std::move(dialog));
return res;
}
//------------------------------------------------------------------------
// MainWindow::newDialog
//------------------------------------------------------------------------
gui::DialogNoState &MainWindow::newDialog(std::string iTitle)
{
return newDialog<gui::VoidState>(std::move(iTitle), {});
}
//------------------------------------------------------------------------
// MainWindow::renderSettingsMenu
//------------------------------------------------------------------------
void MainWindow::renderSettingsMenu()
{
if(ImGui::BeginMenu("Style"))
{
std::optional<bool> newDarkStyle{};
if(ImGui::MenuItem("Dark", nullptr, fDarkStyle))
newDarkStyle = true;
if(ImGui::MenuItem("Light", nullptr, !fDarkStyle))
newDarkStyle = false;
if(newDarkStyle)
setStyle(*newDarkStyle);
ImGui::EndMenu();
}
if(ImGui::MenuItem("Font Size"))
{
newDialog("Font Size")
.content([this] {
if(ImGui::Button(" + "))
requestFontSize(fFontSize + 1.0f);
ImGui::SameLine();
if(ImGui::Button(" - "))
requestFontSize(fFontSize - 1.0f);
ImGui::SameLine();
ImGui::Text("%.0fpx", fFontSize);
})
.buttonOk()
.button("Cancel", [fontSize = fFontSize, this] { requestFontSize(fontSize); });
}
if(ImGui::BeginMenu("Code"))
{
if(ImGui::MenuItem("Line Spacing"))
{
newDialog("Line Spacing")
.content([this] { ImGui::SliderFloat("###line_spacing", &fLineSpacing, 1.0f, 2.0f); })
.buttonOk()
.button("Cancel", [lineSpacing = fLineSpacing, this] { fLineSpacing = lineSpacing; });
}
ImGui::MenuItem("Show White Space", nullptr, &fCodeShowWhiteSpace);
ImGui::EndMenu();
}
if(ImGui::BeginMenu("Resolution"))
{
if(ImGui::MenuItem("Hi DPI", nullptr, fFragmentShaderWindow->isHiDPIAware()))
{
fFragmentShaderWindow->toggleHiDPIAwareness();
}
// if(ImGui::BeginMenu("Aspect Ratio"))
// {
// for(auto &[name, aspectRatio]: kAspectRatios)
// {
// if(ImGui::MenuItem(name.c_str(), nullptr, name == fCurrentAspectRatio))
// {
// fCurrentAspectRatio = name;
// fAspectRatioRequest = aspectRatio;
// }
// }
// ImGui::EndMenu();
// }
ImGui::EndMenu();
}
if(ImGui::BeginMenu("Layout"))
{
if(ImGui::MenuItem("Manual", nullptr, fLayoutManual))
{
if(!fLayoutManual)
switchToManualLayout();
}
if(ImGui::MenuItem("Automatic", nullptr, !fLayoutManual))
{
if(fLayoutManual)
switchToAutomaticLayout();
}
ImGui::Separator();
if(ImGui::MenuItem("Swap"))
swapLayout();
ImGui::EndMenu();
}
}
//------------------------------------------------------------------------
// MainWindow::renderMainMenuBar
//------------------------------------------------------------------------
void MainWindow::renderMainMenuBar()
{
auto padding = ImGui::GetStyle().FramePadding;
padding.y *= 2.0f;
ImGui::PushStyleVar(ImGuiStyleVar_FramePadding, padding);
if(ImGui::BeginMainMenuBar())
{
if(ImGui::BeginMenu(fa::kBars))
// if(ImGui::BeginMenu("WebGPU Shader Toy"))
{
if(ImGui::MenuItem("About"))
newAboutDialog();
if(ImGui::MenuItem("Help"))
newHelpDialog();
ImGui::SeparatorText("Settings");
renderSettingsMenu();
ImGui::SeparatorText("Project | Browser");
ImGui::MenuItem("Auto Save", nullptr, &fBrowserAutoSave);
if(ImGui::MenuItem("Save"))
saveState();
ImGui::SeparatorText("Project | Disk");
if(ImGui::MenuItem("Export"))
promptExportProject();
if(ImGui::MenuItem("Quick Export", getShortcutString("S")))
exportProject();
if(ImGui::MenuItem("Import"))
importFromDisk();
ImGui::Separator();
if(ImGui::BeginMenu("Reset"))
{
if(ImGui::MenuItem("Settings"))
deferBeforeImGuiFrame([this] { resetSettings(); });
if(ImGui::MenuItem("Shaders"))
deferBeforeImGuiFrame([this] { resetShaders(); });
if(ImGui::MenuItem("All"))
deferBeforeImGuiFrame([this] { resetAll(); });
ImGui::EndMenu();
}
#ifndef NDEBUG
ImGui::Separator();
if(ImGui::MenuItem("Quit"))
stop();
#endif
ImGui::EndMenu();
}
ImGui::Text("|");
ImGui::BeginDisabled(fCurrentFragmentShader == nullptr);
if(ImGui::BeginMenu("Shader"))
{
// defined later...
ImGui::EndMenu();
}
ImGui::EndDisabled();
if(ImGui::BeginMenu("History"))
{
renderHistory();
ImGui::EndMenu();
}
renderExampleMenu();
#ifndef NDEBUG
if(ImGui::BeginMenu("Dev"))
{
ImGui::MenuItem("Demo", nullptr, &kShowDemoWindow);
ImGui::EndMenu();
}
#endif
ImGui::EndMainMenuBar();
}
ImGui::PopStyleVar();
}
//------------------------------------------------------------------------
// MainWindow::renderTimeControls
//------------------------------------------------------------------------
void MainWindow::renderTimeControls()
{
// Reset time
if(ImGui::Button(fa::kClockRotateLeft, fIconButtonSize))
fCurrentFragmentShader->resetTime();
ImGui::SameLine();
auto const isKeyAlt = gui::WstGui::IsKeyAlt();
auto const frameCount = isKeyAlt ? 1 : 12;
// Previous frame
ImGui::BeginDisabled(fCurrentFragmentShader->getInputs().frame == 0 && !fCurrentFragmentShader->isManualClock());
{
static bool kClockState{};
ImGui::PushItemFlag(ImGuiItemFlags_ButtonRepeat, true);
auto button = ImGui::Button(isKeyAlt ? ICON_FA_Backward "###Previous" : ICON_FA_BackwardFast "###Previous", fIconButtonSize);
if(ImGui::IsItemDeactivated())
fCurrentFragmentShader->endManualClock();
else
{
if(ImGui::IsItemActivated())
fCurrentFragmentShader->startManualClock();
if(button)
fCurrentFragmentShader->previousFrame(frameCount);
}
ImGui::PopItemFlag();
}
ImGui::EndDisabled();
ImGui::SameLine();
// Play / Pause
if(ImGui::Button(fCurrentFragmentShader->isRunning() ? fa::kCirclePause : fa::kCirclePlay, fIconButtonSize))
fCurrentFragmentShader->toggleRunning();
ImGui::SameLine();
// Next frame
ImGui::PushItemFlag(ImGuiItemFlags_ButtonRepeat, true);
{
auto button = ImGui::Button(isKeyAlt ? ICON_FA_Forward "###Next" : ICON_FA_ForwardFast "###Next", fIconButtonSize);
if(ImGui::IsItemDeactivated())
fCurrentFragmentShader->endManualClock();
else
{
if(ImGui::IsItemActivated())
fCurrentFragmentShader->startManualClock();
if(button)
fCurrentFragmentShader->nextFrame(frameCount);
}
}
ImGui::PopItemFlag();
}
//------------------------------------------------------------------------
// MainWindow::renderControlsSection
//------------------------------------------------------------------------
void MainWindow::renderControlsSection()
{
// [Section] Controls
ImGui::SeparatorText("Controls");
ImGui::BeginDisabled(!fCurrentFragmentShader->isEnabled());
{
// Time controls
renderTimeControls();
ImGui::SameLine();
auto const isKeyAlt = gui::WstGui::IsKeyAlt();
// Screenshot
if(isKeyAlt)
{
if(ImGui::Button(fa::kCamera, fIconButtonSize))
promptSaveCurrentFragmentShaderScreenshot();
}
else
{
if(ImGui::Button(fa::kCameraPolaroid, fIconButtonSize))
saveCurrentFragmentShaderScreenshot(fCurrentFragmentShader->getName());
}
ImGui::SameLine();
// Fullscreen
if(ImGui::Button(isKeyAlt ? fa::kExpand : fa::kExpandWide, fIconButtonSize))
fFragmentShaderWindow->requestFullscreen(!isKeyAlt);
}
ImGui::EndDisabled();
ImGui::SameLine();
ImGui::Text("|");
ImGui::SameLine();
if(ImGui::Button(fa::kPowerOff, fIconButtonSize))
fCurrentFragmentShader->toggleEnabled();
ImGui::SameLine();
ImGui::Text("| %s | %.3f (%.1f FPS)",
fCurrentFragmentShader->getStatus(),
1000.0f / ImGui::GetIO().Framerate,
ImGui::GetIO().Framerate);
}
//------------------------------------------------------------------------
// MainWindow::compile
//------------------------------------------------------------------------
void MainWindow::compile(std::string const &iNewCode)
{
WST_INTERNAL_ASSERT(fCurrentFragmentShader != nullptr);
fCurrentFragmentShader->updateCode(iNewCode);
setCurrentFragmentShader(fCurrentFragmentShader);
}
//------------------------------------------------------------------------
// MainWindow::promptNewEmtpyShader
//------------------------------------------------------------------------
void MainWindow::promptNewEmtpyShader()
{
maybeNewFragmentShader("New Shader", "Create", {"", kEmptyShader});
}
//------------------------------------------------------------------------
// MainWindow::promptRenameCurrentShader
//------------------------------------------------------------------------
void MainWindow::promptRenameCurrentShader()
{
if(!fCurrentFragmentShader)
return;
auto const currentName = fCurrentFragmentShader->getName();
promptShaderName("Rename Shader",
"Rename",
fCurrentFragmentShader->getName(),
[currentName, this](auto const &iNewName) {
renameShader(currentName, iNewName);
},
fCurrentFragmentShader);
}
//------------------------------------------------------------------------
// MainWindow::promptDuplicateShader
//------------------------------------------------------------------------
void MainWindow::promptDuplicateShader(std::string const &iShaderName)
{
if(auto shader = findFragmentShaderByName(iShaderName); shader)
{
maybeNewFragmentShader(fmt::printf("Duplicate %s", iShaderName),
"Duplicate",
{"", shader->getCode()});
}
}
//------------------------------------------------------------------------
// MainWindow::promptShaderName
//------------------------------------------------------------------------
void MainWindow::promptShaderName(std::string const &iTitle,
std::string const &iOkButtonName,
std::string const &iShaderName,
std::function<void(std::string const &)> iOkAction,
std::shared_ptr<FragmentShader> iShader)
{
newDialog(iTitle, iShaderName)
.content([this, shader = std::move(iShader), okButtonName = iOkButtonName] (auto &iDialog) {
auto &newShaderName = iDialog.state();
iDialog.initKeyboardFocusHere();
ImGui::InputText("###name", &newShaderName);
if(auto oldShader = findFragmentShaderByName(newShaderName); oldShader && oldShader != shader)
{
ImGui::SeparatorText("!!! Warning !!!");
ImGui::Text("Duplicate name detected.");
ImGui::Text("Continuing will override the content of the shader.");
iDialog.button(0).fLabel = "Override";
}
else
iDialog.button(0).fLabel = okButtonName;
iDialog.button(0).fEnabled = !newShaderName.empty();
})
.button(iOkButtonName, [action = std::move(iOkAction)] (auto &iDialog) { action(iDialog.state()); }, true)
.buttonCancel()
;
}
//------------------------------------------------------------------------
// MainWindow::resizeShader
//------------------------------------------------------------------------
void MainWindow::resizeShader(Renderable::Size const &iSize, bool iApplyToAll)
{
deferBeforeImGuiFrame([this, iSize, iApplyToAll]() {
if(!fLayoutManual)
setManualLayout(true);
fFragmentShaderWindow->resize(iSize);
if(iApplyToAll)
{
for(auto &shader: fFragmentShaders)
shader->setWindowSize(iSize);
}
});
}
//------------------------------------------------------------------------
// MainWindow::promptShaderFrameSize
//------------------------------------------------------------------------
void MainWindow::promptShaderFrameSize()
{
auto resizeAll = fFragmentShaders.size() > 1;
auto &dialog = newDialog("Shader Frame Size", fFragmentShaderWindow->getSize())
.content([resizeAll] (auto &iDialog) {
auto &size = iDialog.state();
ImGui::SeparatorText("Size (width x height)");
iDialog.initKeyboardFocusHere();
ImGui::InputInt2("###size", &size.width);
ImGui::SetItemDefaultFocus();
iDialog.button(0).fEnabled = size.width > 0 && size.height > 0;
if(resizeAll)
iDialog.button(1).fEnabled = iDialog.button(0).fEnabled;
})
.button("Resize", [this] (auto &iDialog) { resizeShader(iDialog.state(), false); }, true)
;
if(resizeAll)
dialog.button(fmt::printf("Resize All (%d)", fFragmentShaders.size()), [this] (auto &iDialog) { resizeShader(iDialog.state(), true); });
dialog.allowDismissDialog();
dialog.buttonCancel();
}
namespace impl {
//------------------------------------------------------------------------
// impl::ends_with
//------------------------------------------------------------------------
inline bool ends_with(std::string const &s, std::string const &iSuffix)
{
if(s.size() < iSuffix.size())
return false;
return s.substr(s.size() - iSuffix.size()) == iSuffix;
}
}
//------------------------------------------------------------------------
// MainWindow::promptExportShader
//------------------------------------------------------------------------
void MainWindow::promptExportShader(std::string const &iFilename, std::string const &iContent)
{
auto filename = impl::ends_with(iFilename, ".wgsl") ? iFilename : fmt::printf("%s.wgsl", iFilename);
newDialog("Export Shader", filename)
.content([] (auto &iDialog) {
ImGui::SeparatorText("Filename");
iDialog.initKeyboardFocusHere();
ImGui::InputText("###name", &iDialog.state());
iDialog.button(0).fEnabled = !iDialog.state().empty();
})
.button("Export", [content = iContent] (auto &iDialog) {
wgpu_shader_toy_export_content(iDialog.state().c_str(), content.c_str());
}, true)
.buttonCancel()
;
}
//------------------------------------------------------------------------
// MainWindow::promptExportShader
//------------------------------------------------------------------------
void MainWindow::promptExportProject()
{
newDialog("Export Project", std::string(fProjectFilename))
.content([] (auto &iDialog) {
ImGui::SeparatorText("Filename");
iDialog.initKeyboardFocusHere();
ImGui::InputText("###name", &iDialog.state());
iDialog.button(0).fEnabled = !iDialog.state().empty();
})
.button("Export", [this] (auto &iDialog) {
fProjectFilename = iDialog.state();
exportProject();
}, true)
.buttonCancel()
;
}
//------------------------------------------------------------------------
// MainWindow::exportProject
//------------------------------------------------------------------------
void MainWindow::exportProject()
{
wgpu_shader_toy_export_content(fProjectFilename.c_str(), fPreferences->serialize(computeState()).c_str());
}
//------------------------------------------------------------------------
// MainWindow::saveCurrentFragmentShaderScreenshot
//------------------------------------------------------------------------
void MainWindow::saveCurrentFragmentShaderScreenshot(std::string const &iFilename)
{
fFragmentShaderWindow->saveScreenshot(fmt::printf("%s.%s", iFilename, fScreenshotFormat.fExtension),
fScreenshotFormat.fMimeType,
static_cast<float>(fScreenshotQualityPercent) / 100.0f);
}
//------------------------------------------------------------------------
// MainWindow::promptSaveCurrentFragmentShaderScreenshot
//------------------------------------------------------------------------
void MainWindow::promptSaveCurrentFragmentShaderScreenshot()
{
if(!fCurrentFragmentShader)
return;
newDialog("Screenshot", fCurrentFragmentShader->getName())
.content([this] (auto &iDialog) {
ImGui::SeparatorText("Filename");
auto label = fmt::printf(".%s###name", fScreenshotFormat.fExtension);
iDialog.initKeyboardFocusHere();
ImGui::InputText(label.c_str(), &iDialog.state());
iDialog.button(0).fEnabled = !iDialog.state().empty();
ImGui::SeparatorText("Format");
if(ImGui::BeginCombo("Format", fScreenshotFormat.fDescription.c_str()))
{
for(auto &format: image::format::kAll)
{
if(ImGui::Selectable(format.fDescription.c_str(), fScreenshotFormat.fMimeType == format.fMimeType))
fScreenshotFormat = format;
}
ImGui::EndCombo();
}
if(fScreenshotFormat.fHasQuality)
ImGui::SliderInt("Quality", &fScreenshotQualityPercent, 1, 100, "%d%%");
ImGui::SeparatorText("Time Controls");
if(fCurrentFragmentShader)
renderTimeControls();
})
.button(ICON_FA_Camera " Screenshot", [this] (auto &iDialog) {
saveCurrentFragmentShaderScreenshot(iDialog.state());
}, true)
.allowDismissDialog()
.buttonCancel();
}
//------------------------------------------------------------------------
// MainWindow::renderShaderMenu
//------------------------------------------------------------------------
void MainWindow::renderShaderMenu(TextEditor &iEditor, std::string const &iNewCode, bool iEdited)
{
if(ImGui::BeginMenu("Shader"))
{
// -- Code ------
ImGui::SeparatorText("Shader");
if(ImGui::MenuItem(ICON_FA_Hammer " Compile", getShortcutString("D"), false, iEdited))
compile(iNewCode);
if(ImGui::MenuItem("Rename"))
promptRenameCurrentShader();
if(ImGui::MenuItem("Duplicate"))
promptDuplicateShader(fCurrentFragmentShader->getName());
if(ImGui::MenuItem("Export"))
promptExportShader(fCurrentFragmentShader->getName(), iNewCode);
// -- Edit ------
ImGui::SeparatorText("Edit");
if(ImGui::MenuItem("Undo", getShortcutString("Z")))
iEditor.Undo();
if(ImGui::MenuItem("Redo", getShortcutString("Z", "Shift + %s + %s")))
iEditor.Redo();
ImGui::Separator();
if(ImGui::MenuItem("Select All", getShortcutString("A", "Shift + %s + %s")))
iEditor.SelectAll();
// -- Frame ------
ImGui::SeparatorText("Frame");
if(ImGui::MenuItem(ICON_FA_PowerOff " Enabled", nullptr, fCurrentFragmentShader->isEnabled()))
fCurrentFragmentShader->toggleEnabled();
if(ImGui::MenuItem("Resize"))
promptShaderFrameSize();
if(ImGui::MenuItem(ICON_FA_Camera " Screenshot"))
promptSaveCurrentFragmentShaderScreenshot();
ImGui::EndMenu();
}
}
//------------------------------------------------------------------------
// MainWindow::renderShaderSection
//------------------------------------------------------------------------
void MainWindow::renderShaderSection(bool iEditorHasFocus)
{
// [Section] Shader
ImGui::SeparatorText("Shader");
if(ImGui::BeginTabBar(fCurrentFragmentShader->getName().c_str()))
{
auto &editor = fCurrentFragmentShader->edit();
editor.SetPalette(fDarkStyle ? TextEditor::PaletteId::Dark : TextEditor::PaletteId::Light);
editor.SetLineSpacing(fLineSpacing);
editor.SetShowWhitespacesEnabled(fCodeShowWhiteSpace);
auto newCode = editor.GetText();
auto edited = newCode != fCurrentFragmentShader->getCode();
// [Keyboard shortcut]
if(iEditorHasFocus && ImGui::IsKeyChordPressed(ImGuiMod_Ctrl | ImGuiKey_D))
{
if(edited)
compile(newCode);
}
if(ImGui::BeginMainMenuBar())
{
renderShaderMenu(editor, newCode, edited);
ImGui::EndMainMenuBar();
}
// [TabItem] Code
if(ImGui::BeginTabItem("Code"))
{
// [Child] Menu / toolbar for text editor
const bool hasCompilationError = fCurrentFragmentShader->hasCompilationError();
long lines = std::min(hasCompilationError ? impl::lineCount(fCurrentFragmentShader->getCompilationErrorMessage()) - 1 : 1, 10L);
ImGui::PushStyleColor(ImGuiCol_ScrollbarBg, ImGui::GetStyle().Colors[ImGuiCol_ChildBg]);
if(hasCompilationError)
ImGui::PushStyleColor(ImGuiCol_ChildBg, ImGui::ColorConvertU32ToFloat4(editor.GetErrorMarkerColor()));
ImGui::SetNextWindowSizeConstraints(ImVec2(0.0f, ImGui::GetTextLineHeightWithSpacing() * 1),
ImVec2(FLT_MAX, ImGui::GetTextLineHeightWithSpacing() * static_cast<float>(lines)));
if(ImGui::BeginChild("Menu Bar", {}, 0, ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_MenuBar | ImGuiWindowFlags_HorizontalScrollbar))
{
if(ImGui::BeginMenuBar())
{
if(!edited && hasCompilationError)
editor.AddErrorMarker(fCurrentFragmentShader->getCompilationErrorLine(), fCurrentFragmentShader->getCompilationErrorMessage());
else
editor.ClearErrorMarkers();
int lineCount, columnCount;
editor.GetCursorPosition(lineCount, columnCount);
ImGui::Text("%d/%d | %d lines", lineCount + 1, columnCount + 1, editor.GetLineCount());
ImGui::BeginDisabled(!edited);
if(ImGui::Button(ICON_FA_Hammer " Compile"))
compile(newCode);
ImGui::EndDisabled();
ImGui::EndMenuBar();
}
if(fCurrentFragmentShader->hasCompilationError())
{
ImGui::Text("%s", fCurrentFragmentShader->getCompilationErrorMessage().c_str());
}
}
ImGui::EndChild();
ImGui::PopStyleColor(hasCompilationError ? 2 : 1);
// [Editor] Render
editor.Render("Code", iEditorHasFocus, {}, 0, ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_HorizontalScrollbar);
ImGui::EndTabItem();
}
// [TabItem] Inputs
if(ImGui::BeginTabItem("Inputs"))
{
auto &inputs = fCurrentFragmentShader->getInputs();
ImGui::Text(FragmentShader::kHeaderTemplate,
static_cast<int>(inputs.size.x), static_cast<int>(inputs.size.y), inputs.size.z, inputs.size.w, // size: vec4f
static_cast<int>(inputs.mouse.x), static_cast<int>(inputs.mouse.y), static_cast<int>(inputs.mouse.z), static_cast<int>(inputs.mouse.w), // mouse: vec4f
inputs.time, // time: f32
inputs.frame // frame: i32
);
ImGui::EndTabItem();
}
ImGui::EndTabBar();
}
}
//------------------------------------------------------------------------
// MainWindow::renderDialog
//------------------------------------------------------------------------
void MainWindow::renderDialog()
{
if(!fCurrentDialog)
{
if(fDialogs.empty())
return;
fCurrentDialog = std::move(fDialogs[0]);
fDialogs.erase(fDialogs.begin());
}
ImGui::GetIO().ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;
fCurrentDialog->render();
if(!fCurrentDialog->isOpen())
{
ImGui::GetIO().ConfigFlags &= ~ImGuiConfigFlags_NavEnableKeyboard;
fCurrentDialog = nullptr;
}
}
//------------------------------------------------------------------------
// MainWindow::renderExampleMenu
//------------------------------------------------------------------------
void MainWindow::renderExampleMenu()
{
if(ImGui::BeginMenu("Examples"))
{
ImGui::SeparatorText("Built-in");
for(auto &shader: kBuiltInFragmentShaderExamples)
{
if(ImGui::MenuItem(shader.fName.c_str()))
maybeNewFragmentShader("Load Example", "Add", shader);
}
ImGui::SeparatorText("External");
for(auto &[name, url]: kExternalFragmentShaderExamples)
{
if(ImGui::MenuItem(name.c_str()))
importFromURL(url);
}
ImGui::EndMenu();
}
}
//------------------------------------------------------------------------
// MainWindow::doRender
//------------------------------------------------------------------------
void MainWindow::doRender()
{
fIconButtonSize = {ImGui::CalcTextSize(fa::kCameraPolaroid).x + 2 * ImGui::GetStyle().ItemInnerSpacing.x, 0};
renderMainMenuBar();
bool isDialogOpen = hasDialog();
if(isDialogOpen)
renderDialog();
// The main window occupies the full available space
ImGui::SetNextWindowPos(ImGui::GetMainViewport()->WorkPos);
ImGui::SetNextWindowSize(ImGui::GetMainViewport()->WorkSize);
if(ImGui::Begin("WebGPU Shader Toy", nullptr,
ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoCollapse | ImGuiWindowFlags_HorizontalScrollbar))
{
// [TabBar] One tab per shader
if(ImGui::BeginTabBar("Fragment Shaders"))
{
if(!fFragmentShaders.empty())
{
auto selectedFragmentShader = fFragmentShaders[0];
std::shared_ptr<FragmentShader> fragmentShaderToRemove{};
for(auto &shader: fFragmentShaders)