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Use ImGui from DPF-Widgets repo 

Signed-off-by: falkTX <falktx@falktx.com>
pull/341/head
falkTX 3 years ago
parent
402254e469
commit
c62c8e4c2a
Signed by: falkTX <falktx@falktx.com> GPG Key ID: CDBAA37ABC74FBA0
6 changed files with 31 additions and 441 deletions
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  1. +2
    -2
      examples/ImguiSimpleGain/DistrhoPluginInfo.h
  2. +0
    -35
      examples/ImguiSimpleGain/ImGuiSrc.cpp
  3. +0
    -314
      examples/ImguiSimpleGain/ImGuiUI.cpp
  4. +0
    -56
      examples/ImguiSimpleGain/ImGuiUI.hpp
  5. +4
    -15
      examples/ImguiSimpleGain/Makefile
  6. +25
    -19
      examples/ImguiSimpleGain/UISimpleGain.cpp

+ 2
- 2
examples/ImguiSimpleGain/DistrhoPluginInfo.h View File

@@ -131,7 +131,7 @@
This path must be relative to dpf/distrho/DistrhoUI.hpp
@see DISTRHO_UI_USE_CUSTOM
*/
#define DISTRHO_UI_CUSTOM_INCLUDE_PATH "ImGuiUI.hpp"
#define DISTRHO_UI_CUSTOM_INCLUDE_PATH "DearImGui.hpp"

/**
The top-level-widget typedef to use for the custom toolkit.
@@ -140,6 +140,6 @@
and define widget type as e.g. DGL_NAMESPACE::MyCustomTopLevelWidget.
@see DISTRHO_UI_USE_CUSTOM
*/
#define DISTRHO_UI_CUSTOM_WIDGET_TYPE DGL_NAMESPACE::ImGuiUI
#define DISTRHO_UI_CUSTOM_WIDGET_TYPE DGL_NAMESPACE::ImGuiTopLevelWidget

#define DISTRHO_UI_USER_RESIZABLE 1

+ 0
- 35
examples/ImguiSimpleGain/ImGuiSrc.cpp View File

@@ -1,35 +0,0 @@
/*
* DISTRHO Plugin Framework (DPF)
* Copyright (C) 2021 Jean Pierre Cimalando <jp-dev@inbox.ru>
*
* Permission to use, copy, modify, and/or distribute this software for any purpose with
* or without fee is hereby granted, provided that the above copyright notice and this
* permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD
* TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN
* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/

#include <imgui.h>
#if !defined(IMGUI_GL2) && !defined(IMGUI_GL3)
# define IMGUI_GL2 1
#endif
#if defined(IMGUI_GL2)
# include <imgui_impl_opengl2.h>
#elif defined(IMGUI_GL3)
# include <imgui_impl_opengl3.h>
#endif

#include <imgui.cpp>
#include <imgui_draw.cpp>
#include <imgui_tables.cpp>
#include <imgui_widgets.cpp>
#if defined(IMGUI_GL2)
#include <imgui_impl_opengl2.cpp>
#elif defined(IMGUI_GL3)
#include <imgui_impl_opengl3.cpp>
#endif

+ 0
- 314
examples/ImguiSimpleGain/ImGuiUI.cpp View File

@@ -1,314 +0,0 @@
/*
* DISTRHO Plugin Framework (DPF)
* Copyright (C) 2021 Jean Pierre Cimalando <jp-dev@inbox.ru>
*
* Permission to use, copy, modify, and/or distribute this software for any purpose with
* or without fee is hereby granted, provided that the above copyright notice and this
* permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD
* TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN
* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/

#include "Application.hpp"

#include <GL/glew.h>

#include "ImGuiUI.hpp"
#include <imgui.h>
#if !defined(IMGUI_GL2) && !defined(IMGUI_GL3)
# define IMGUI_GL2 1
#endif
#if defined(IMGUI_GL2)
# include <imgui_impl_opengl2.h>
#elif defined(IMGUI_GL3)
# include <imgui_impl_opengl3.h>
#endif
#include <chrono>
#include <cmath>

START_NAMESPACE_DGL

struct ImGuiUI::Impl
{
explicit Impl(ImGuiUI* self);
~Impl();

void setupGL();
void cleanupGL();

static int mouseButtonToImGui(int button);

ImGuiUI* fSelf = nullptr;
ImGuiContext* fContext = nullptr;
Color fBackgroundColor{0.25f, 0.25f, 0.25f};
int fRepaintIntervalMs = 15;

using Clock = std::chrono::steady_clock;
Clock::time_point fLastRepainted;
bool fWasEverPainted = false;
};

ImGuiUI::ImGuiUI(Window& windowToMapTo)
: TopLevelWidget(windowToMapTo),
fImpl(new ImGuiUI::Impl(this))
{
getApp().addIdleCallback(this);
}

ImGuiUI::~ImGuiUI()
{
delete fImpl;
}

void ImGuiUI::setBackgroundColor(Color color)
{
fImpl->fBackgroundColor = color;
}

void ImGuiUI::setRepaintInterval(int intervalMs)
{
fImpl->fRepaintIntervalMs = intervalMs;
}

void ImGuiUI::onDisplay()
{
ImGui::SetCurrentContext(fImpl->fContext);

#if defined(IMGUI_GL2)
ImGui_ImplOpenGL2_NewFrame();
#elif defined(IMGUI_GL3)
ImGui_ImplOpenGL3_NewFrame();
#endif

ImGui::NewFrame();
onImGuiDisplay();
ImGui::Render();

ImGuiIO &io = ImGui::GetIO();

glViewport(0, 0, (int)io.DisplaySize.x, (int)io.DisplaySize.y);

Color backgroundColor = fImpl->fBackgroundColor;
glClearColor(
backgroundColor.red, backgroundColor.green,
backgroundColor.blue, backgroundColor.alpha);
glClear(GL_COLOR_BUFFER_BIT);
glLoadIdentity();

#if defined(IMGUI_GL2)
ImGui_ImplOpenGL2_RenderDrawData(ImGui::GetDrawData());
#elif defined(IMGUI_GL3)
ImGui_ImplOpenGL3_RenderDrawData(ImGui::GetDrawData());
#endif

fImpl->fLastRepainted = Impl::Clock::now();
fImpl->fWasEverPainted = true;
}

bool ImGuiUI::onKeyboard(const KeyboardEvent& event)
{
ImGui::SetCurrentContext(fImpl->fContext);
ImGuiIO &io = ImGui::GetIO();

if (event.press)
io.AddInputCharacter(event.key);

int imGuiKey = event.key;
if (imGuiKey >= 0 && imGuiKey < 128)
{
if (imGuiKey >= 'a' && imGuiKey <= 'z')
imGuiKey = imGuiKey - 'a' + 'A';
io.KeysDown[imGuiKey] = event.press;
}

return io.WantCaptureKeyboard;
}

bool ImGuiUI::onSpecial(const SpecialEvent& event)
{
ImGui::SetCurrentContext(fImpl->fContext);
ImGuiIO &io = ImGui::GetIO();

int imGuiKey = IM_ARRAYSIZE(io.KeysDown) - event.key;
io.KeysDown[imGuiKey] = event.press;

switch (event.key)
{
case kKeyShift:
io.KeyShift = event.press;
break;
case kKeyControl:
io.KeyCtrl = event.press;
break;
case kKeyAlt:
io.KeyAlt = event.press;
break;
case kKeySuper:
io.KeySuper = event.press;
break;
default:
break;
}

return io.WantCaptureKeyboard;
}

bool ImGuiUI::onMouse(const MouseEvent& event)
{
ImGui::SetCurrentContext(fImpl->fContext);
ImGuiIO &io = ImGui::GetIO();

int imGuiButton = Impl::mouseButtonToImGui(event.button);
if (imGuiButton != -1)
io.MouseDown[imGuiButton] = event.press;

return io.WantCaptureMouse;
}

bool ImGuiUI::onMotion(const MotionEvent& event)
{
ImGui::SetCurrentContext(fImpl->fContext);
ImGuiIO &io = ImGui::GetIO();

// FIXME
const double scaleFactor = 1; // getScaleFactor();
io.MousePos.x = std::round(scaleFactor * event.pos.getX());
io.MousePos.y = std::round(scaleFactor * event.pos.getY());

return false;
}

bool ImGuiUI::onScroll(const ScrollEvent& event)
{
ImGui::SetCurrentContext(fImpl->fContext);
ImGuiIO &io = ImGui::GetIO();

io.MouseWheel += event.delta.getY();
io.MouseWheelH += event.delta.getX();

return io.WantCaptureMouse;
}

void ImGuiUI::onResize(const ResizeEvent& event)
{
TopLevelWidget::onResize(event);

const uint width = event.size.getWidth();
const uint height = event.size.getHeight();

ImGui::SetCurrentContext(fImpl->fContext);
ImGuiIO &io = ImGui::GetIO();

const double scaleFactor = getScaleFactor();
io.DisplaySize.x = std::round(scaleFactor * width);
io.DisplaySize.y = std::round(scaleFactor * height);
}

void ImGuiUI::idleCallback()
{
bool shouldRepaint;

if (fImpl->fWasEverPainted)
{
Impl::Clock::duration elapsed =
Impl::Clock::now() - fImpl->fLastRepainted;
std::chrono::milliseconds elapsedMs =
std::chrono::duration_cast<std::chrono::milliseconds>(elapsed);
shouldRepaint = elapsedMs.count() > fImpl->fRepaintIntervalMs;
}
else
{
shouldRepaint = true;
}

if (shouldRepaint)
repaint();
}

ImGuiUI::Impl::Impl(ImGuiUI* self)
: fSelf(self)
{
setupGL();
}

ImGuiUI::Impl::~Impl()
{
cleanupGL();
}

void ImGuiUI::Impl::setupGL()
{
DISTRHO_SAFE_ASSERT_RETURN(glewInit() == 0,);

IMGUI_CHECKVERSION();
fContext = ImGui::CreateContext();
ImGui::SetCurrentContext(fContext);

ImGuiIO &io = ImGui::GetIO();
const double scaleFactor = fSelf->getScaleFactor();
io.DisplaySize.x = std::round(scaleFactor * fSelf->getWidth());
io.DisplaySize.y = std::round(scaleFactor * fSelf->getHeight());
io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;
io.IniFilename = nullptr;

io.KeyMap[ImGuiKey_Tab] = '\t';
io.KeyMap[ImGuiKey_LeftArrow] = IM_ARRAYSIZE(io.KeysDown) - kKeyLeft;
io.KeyMap[ImGuiKey_RightArrow] = IM_ARRAYSIZE(io.KeysDown) - kKeyRight;
io.KeyMap[ImGuiKey_UpArrow] = IM_ARRAYSIZE(io.KeysDown) - kKeyUp;
io.KeyMap[ImGuiKey_DownArrow] = IM_ARRAYSIZE(io.KeysDown) - kKeyDown;
io.KeyMap[ImGuiKey_PageUp] = IM_ARRAYSIZE(io.KeysDown) - kKeyPageUp;
io.KeyMap[ImGuiKey_PageDown] = IM_ARRAYSIZE(io.KeysDown) - kKeyPageDown;
io.KeyMap[ImGuiKey_Home] = IM_ARRAYSIZE(io.KeysDown) - kKeyHome;
io.KeyMap[ImGuiKey_End] = IM_ARRAYSIZE(io.KeysDown) - kKeyEnd;
io.KeyMap[ImGuiKey_Insert] = IM_ARRAYSIZE(io.KeysDown) - kKeyInsert;
io.KeyMap[ImGuiKey_Delete] = 127;
io.KeyMap[ImGuiKey_Backspace] = '\b';
io.KeyMap[ImGuiKey_Space] = ' ';
io.KeyMap[ImGuiKey_Enter] = '\r';
io.KeyMap[ImGuiKey_Escape] = 27;
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';

#if defined(IMGUI_GL2)
ImGui_ImplOpenGL2_Init();
#elif defined(IMGUI_GL3)
ImGui_ImplOpenGL3_Init();
#endif
}

void ImGuiUI::Impl::cleanupGL()
{
ImGui::SetCurrentContext(fContext);
#if defined(IMGUI_GL2)
ImGui_ImplOpenGL2_Shutdown();
#elif defined(IMGUI_GL3)
ImGui_ImplOpenGL3_Shutdown();
#endif
ImGui::DestroyContext(fContext);
}

int ImGuiUI::Impl::mouseButtonToImGui(int button)
{
switch (button)
{
default:
return -1;
case 1:
return 0;
case 2:
return 2;
case 3:
return 1;
}
}

END_NAMESPACE_DGL

+ 0
- 56
examples/ImguiSimpleGain/ImGuiUI.hpp View File

@@ -1,56 +0,0 @@
/*
* DISTRHO Plugin Framework (DPF)
* Copyright (C) 2021 Jean Pierre Cimalando <jp-dev@inbox.ru>
*
* Permission to use, copy, modify, and/or distribute this software for any purpose with
* or without fee is hereby granted, provided that the above copyright notice and this
* permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD
* TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN
* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/

#pragma once

#include "TopLevelWidget.hpp"
#include "Color.hpp"

#ifndef DGL_OPENGL
# error ImGUI is only available in OpenGL mode
#endif

START_NAMESPACE_DGL

/**
ImGui user interface class.
*/
class ImGuiUI : public TopLevelWidget,
public IdleCallback {
public:
ImGuiUI(Window& windowToMapTo);
~ImGuiUI() override;
void setBackgroundColor(Color color);
void setRepaintInterval(int intervalMs);

protected:
virtual void onImGuiDisplay() = 0;

virtual void onDisplay() override;
virtual bool onKeyboard(const KeyboardEvent& event) override;
virtual bool onSpecial(const SpecialEvent& event) override;
virtual bool onMouse(const MouseEvent& event) override;
virtual bool onMotion(const MotionEvent& event) override;
virtual bool onScroll(const ScrollEvent& event) override;
virtual void onResize(const ResizeEvent& event) override;
virtual void idleCallback() override;

private:
struct Impl;
Impl* fImpl;
};

END_NAMESPACE_DGL

+ 4
- 15
examples/ImguiSimpleGain/Makefile View File

@@ -17,35 +17,24 @@ FILES_DSP = \

FILES_UI = \
UISimpleGain.cpp \
ImGuiUI.cpp \
ImGuiSrc.cpp
../../../DPF-Widgets/opengl/DearImGui.cpp

# --------------------------------------------------------------
# Do some magic

include ../../Makefile.plugins.mk

BUILD_CXX_FLAGS += -I../../../imgui -I../../../imgui/backends
BUILD_CXX_FLAGS += $(shell $(PKG_CONFIG) glew --cflags)
LINK_FLAGS += $(shell $(PKG_CONFIG) glew --libs)
# path to DPF-Widgets
BUILD_CXX_FLAGS += -I../../../DPF-Widgets/opengl/

# --------------------------------------------------------------
# Enable all selected plugin types

ifeq ($(HAVE_OPENGL),true)
TARGETS += jack lv2_sep vst3

TARGETS += jack

ifneq ($(MACOS_OR_WINDOWS),true)
ifeq ($(HAVE_LIBLO),true)
TARGETS += dssi
endif # HAVE_LIBLO
endif # MACOS_OR_WINDOWS

TARGETS += lv2_sep
TARGETS += vst

endif # HAVE_OPENGL

all: $(TARGETS)



+ 25
- 19
examples/ImguiSimpleGain/UISimpleGain.cpp View File

@@ -25,8 +25,6 @@
*/

#include "UISimpleGain.hpp"
#include <imgui.h>
// #include "Window.hpp"

START_NAMESPACE_DISTRHO

@@ -34,13 +32,13 @@ START_NAMESPACE_DISTRHO
// Init / Deinit

UISimpleGain::UISimpleGain()
: UI(600, 400)
: UI(600, 400)
{
setGeometryConstraints(600, 400, true);
}

UISimpleGain::~UISimpleGain() {
UISimpleGain::~UISimpleGain()
{
}

// -----------------------------------------------------------------------
@@ -50,13 +48,15 @@ UISimpleGain::~UISimpleGain() {
A parameter has changed on the plugin side.
This is called by the host to inform the UI about parameter changes.
*/
void UISimpleGain::parameterChanged(uint32_t index, float value) {
void UISimpleGain::parameterChanged(uint32_t index, float value)
{
params[index] = value;

switch (index) {
case PluginSimpleGain::paramGain:
// do something when Gain param is set, such as update a widget
break;
switch (index)
{
case PluginSimpleGain::paramGain:
// do something when Gain param is set, such as update a widget
break;
}

(void)value;
@@ -66,9 +66,12 @@ void UISimpleGain::parameterChanged(uint32_t index, float value) {
A program has been loaded on the plugin side.
This is called by the host to inform the UI about program changes.
*/
void UISimpleGain::programLoaded(uint32_t index) {
if (index < presetCount) {
for (int i=0; i < PluginSimpleGain::paramCount; i++) {
void UISimpleGain::programLoaded(uint32_t index)
{
if (index < presetCount)
{
for (int i=0; i < PluginSimpleGain::paramCount; i++)
{
// set values for each parameter and update their widgets
parameterChanged(i, factoryPresets[index].params[i]);
}
@@ -78,7 +81,8 @@ void UISimpleGain::programLoaded(uint32_t index) {
/**
Optional callback to inform the UI about a sample rate change on the plugin side.
*/
void UISimpleGain::sampleRateChanged(double newSampleRate) {
void UISimpleGain::sampleRateChanged(double newSampleRate)
{
(void)newSampleRate;
}

@@ -89,10 +93,11 @@ void UISimpleGain::sampleRateChanged(double newSampleRate) {
/**
A function called to draw the view contents.
*/
void UISimpleGain::onImGuiDisplay() {
float width = getWidth();
float height = getHeight();
float margin = 20.0f;
void UISimpleGain::onImGuiDisplay()
{
const float width = getWidth();
const float height = getHeight();
const float margin = 20.0f;

ImGui::SetNextWindowPos(ImVec2(margin, margin));
ImGui::SetNextWindowSize(ImVec2(width - 2 * margin, height - 2 * margin));
@@ -121,7 +126,8 @@ void UISimpleGain::onImGuiDisplay() {

// -----------------------------------------------------------------------

UI* createUI() {
UI* createUI()
{
return new UISimpleGain();
}



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