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ImSequencer.cpp
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// https://github.com/CedricGuillemet/ImGuizmo
// v 1.83
//
// The MIT License(MIT)
//
// Copyright(c) 2021 Cedric Guillemet
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files(the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and / or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions :
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
//
#include "ImSequencer.h"
#include "imgui.h"
#include "imgui_internal.h"
#include <cstdlib>
namespace ImSequencer
{
#ifndef IMGUI_DEFINE_MATH_OPERATORS
static ImVec2 operator+(const ImVec2& a, const ImVec2& b) {
return ImVec2(a.x + b.x, a.y + b.y);
}
#endif
static bool SequencerAddDelButton(ImDrawList* draw_list, ImVec2 pos, bool add = true)
{
ImGuiIO& io = ImGui::GetIO();
ImRect delRect(pos, ImVec2(pos.x + 16, pos.y + 16));
bool overDel = delRect.Contains(io.MousePos);
int delColor = overDel ? 0xFFAAAAAA : 0x50000000;
float midy = pos.y + 16 / 2 - 0.5f;
float midx = pos.x + 16 / 2 - 0.5f;
draw_list->AddRect(delRect.Min, delRect.Max, delColor, 4);
draw_list->AddLine(ImVec2(delRect.Min.x + 3, midy), ImVec2(delRect.Max.x - 3, midy), delColor, 2);
if (add)
draw_list->AddLine(ImVec2(midx, delRect.Min.y + 3), ImVec2(midx, delRect.Max.y - 3), delColor, 2);
return overDel;
}
bool Sequencer(SequenceInterface* sequence, int* currentFrame, bool* expanded, int* selectedEntry, int* firstFrame, int sequenceOptions)
{
bool ret = false;
ImGuiIO& io = ImGui::GetIO();
int cx = (int)(io.MousePos.x);
int cy = (int)(io.MousePos.y);
static float framePixelWidth = 10.f;
static float framePixelWidthTarget = 10.f;
int legendWidth = 200;
static int movingEntry = -1;
static int movingPos = -1;
static int movingPart = -1;
int delEntry = -1;
int dupEntry = -1;
int ItemHeight = 20;
bool popupOpened = false;
int sequenceCount = sequence->GetItemCount();
if (!sequenceCount)
return false;
ImGui::BeginGroup();
ImDrawList* draw_list = ImGui::GetWindowDrawList();
ImVec2 canvas_pos = ImGui::GetCursorScreenPos(); // ImDrawList API uses screen coordinates!
ImVec2 canvas_size = ImGui::GetContentRegionAvail(); // Resize canvas to what's available
int firstFrameUsed = firstFrame ? *firstFrame : 0;
int controlHeight = sequenceCount * ItemHeight;
for (int i = 0; i < sequenceCount; i++)
controlHeight += int(sequence->GetCustomHeight(i));
int frameCount = ImMax(sequence->GetFrameMax() - sequence->GetFrameMin(), 1);
static bool MovingScrollBar = false;
static bool MovingCurrentFrame = false;
struct CustomDraw
{
int index;
ImRect customRect;
ImRect legendRect;
ImRect clippingRect;
ImRect legendClippingRect;
};
ImVector<CustomDraw> customDraws;
ImVector<CustomDraw> compactCustomDraws;
// zoom in/out
const int visibleFrameCount = (int)floorf((canvas_size.x - legendWidth) / framePixelWidth);
const float barWidthRatio = ImMin(visibleFrameCount / (float)frameCount, 1.f);
const float barWidthInPixels = barWidthRatio * (canvas_size.x - legendWidth);
ImRect regionRect(canvas_pos, canvas_pos + canvas_size);
static bool panningView = false;
static ImVec2 panningViewSource;
static int panningViewFrame;
if (ImGui::IsWindowFocused() && io.KeyAlt && io.MouseDown[2])
{
if (!panningView)
{
panningViewSource = io.MousePos;
panningView = true;
panningViewFrame = *firstFrame;
}
*firstFrame = panningViewFrame - int((io.MousePos.x - panningViewSource.x) / framePixelWidth);
*firstFrame = ImClamp(*firstFrame, sequence->GetFrameMin(), sequence->GetFrameMax() - visibleFrameCount);
}
if (panningView && !io.MouseDown[2])
{
panningView = false;
}
framePixelWidthTarget = ImClamp(framePixelWidthTarget, 0.1f, 50.f);
framePixelWidth = ImLerp(framePixelWidth, framePixelWidthTarget, 0.33f);
frameCount = sequence->GetFrameMax() - sequence->GetFrameMin();
if (visibleFrameCount >= frameCount && firstFrame)
*firstFrame = sequence->GetFrameMin();
// --
if (expanded && !*expanded)
{
ImGui::InvisibleButton("canvas", ImVec2(canvas_size.x - canvas_pos.x, (float)ItemHeight));
draw_list->AddRectFilled(canvas_pos, ImVec2(canvas_size.x + canvas_pos.x, canvas_pos.y + ItemHeight), 0xFF3D3837, 0);
char tmps[512];
ImFormatString(tmps, IM_ARRAYSIZE(tmps), "%d Frames / %d entries", frameCount, sequenceCount);
draw_list->AddText(ImVec2(canvas_pos.x + 26, canvas_pos.y + 2), 0xFFFFFFFF, tmps);
}
else
{
bool hasScrollBar(true);
/*
int framesPixelWidth = int(frameCount * framePixelWidth);
if ((framesPixelWidth + legendWidth) >= canvas_size.x)
{
hasScrollBar = true;
}
*/
// test scroll area
ImVec2 headerSize(canvas_size.x, (float)ItemHeight);
ImVec2 scrollBarSize(canvas_size.x, 14.f);
ImGui::InvisibleButton("topBar", headerSize);
draw_list->AddRectFilled(canvas_pos, canvas_pos + headerSize, 0xFFFF0000, 0);
ImVec2 childFramePos = ImGui::GetCursorScreenPos();
ImVec2 childFrameSize(canvas_size.x, canvas_size.y - 8.f - headerSize.y - (hasScrollBar ? scrollBarSize.y : 0));
ImGui::PushStyleColor(ImGuiCol_FrameBg, 0);
ImGui::BeginChildFrame(889, childFrameSize);
sequence->focused = ImGui::IsWindowFocused();
ImGui::InvisibleButton("contentBar", ImVec2(canvas_size.x, float(controlHeight)));
const ImVec2 contentMin = ImGui::GetItemRectMin();
const ImVec2 contentMax = ImGui::GetItemRectMax();
const ImRect contentRect(contentMin, contentMax);
const float contentHeight = contentMax.y - contentMin.y;
// full background
draw_list->AddRectFilled(canvas_pos, canvas_pos + canvas_size, 0xFF242424, 0);
// current frame top
ImRect topRect(ImVec2(canvas_pos.x + legendWidth, canvas_pos.y), ImVec2(canvas_pos.x + canvas_size.x, canvas_pos.y + ItemHeight));
if (!MovingCurrentFrame && !MovingScrollBar && movingEntry == -1 && sequenceOptions & SEQUENCER_CHANGE_FRAME && currentFrame && *currentFrame >= 0 && topRect.Contains(io.MousePos) && io.MouseDown[0])
{
MovingCurrentFrame = true;
}
if (MovingCurrentFrame)
{
if (frameCount)
{
*currentFrame = (int)((io.MousePos.x - topRect.Min.x) / framePixelWidth) + firstFrameUsed;
if (*currentFrame < sequence->GetFrameMin())
*currentFrame = sequence->GetFrameMin();
if (*currentFrame >= sequence->GetFrameMax())
*currentFrame = sequence->GetFrameMax();
}
if (!io.MouseDown[0])
MovingCurrentFrame = false;
}
//header
draw_list->AddRectFilled(canvas_pos, ImVec2(canvas_size.x + canvas_pos.x, canvas_pos.y + ItemHeight), 0xFF3D3837, 0);
if (sequenceOptions & SEQUENCER_ADD)
{
if (SequencerAddDelButton(draw_list, ImVec2(canvas_pos.x + legendWidth - ItemHeight, canvas_pos.y + 2), true) && io.MouseReleased[0])
ImGui::OpenPopup("addEntry");
if (ImGui::BeginPopup("addEntry"))
{
for (int i = 0; i < sequence->GetItemTypeCount(); i++)
if (ImGui::Selectable(sequence->GetItemTypeName(i)))
{
sequence->Add(i);
*selectedEntry = sequence->GetItemCount() - 1;
}
ImGui::EndPopup();
popupOpened = true;
}
}
//header frame number and lines
int modFrameCount = 10;
int frameStep = 1;
while ((modFrameCount * framePixelWidth) < 150)
{
modFrameCount *= 2;
frameStep *= 2;
};
int halfModFrameCount = modFrameCount / 2;
auto drawLine = [&](int i, int regionHeight) {
bool baseIndex = ((i % modFrameCount) == 0) || (i == sequence->GetFrameMax() || i == sequence->GetFrameMin());
bool halfIndex = (i % halfModFrameCount) == 0;
int px = (int)canvas_pos.x + int(i * framePixelWidth) + legendWidth - int(firstFrameUsed * framePixelWidth);
int tiretStart = baseIndex ? 4 : (halfIndex ? 10 : 14);
int tiretEnd = baseIndex ? regionHeight : ItemHeight;
if (px <= (canvas_size.x + canvas_pos.x) && px >= (canvas_pos.x + legendWidth))
{
draw_list->AddLine(ImVec2((float)px, canvas_pos.y + (float)tiretStart), ImVec2((float)px, canvas_pos.y + (float)tiretEnd - 1), 0xFF606060, 1);
draw_list->AddLine(ImVec2((float)px, canvas_pos.y + (float)ItemHeight), ImVec2((float)px, canvas_pos.y + (float)regionHeight - 1), 0x30606060, 1);
}
if (baseIndex && px > (canvas_pos.x + legendWidth))
{
char tmps[512];
ImFormatString(tmps, IM_ARRAYSIZE(tmps), "%d", i);
draw_list->AddText(ImVec2((float)px + 3.f, canvas_pos.y), 0xFFBBBBBB, tmps);
}
};
auto drawLineContent = [&](int i, int /*regionHeight*/) {
int px = (int)canvas_pos.x + int(i * framePixelWidth) + legendWidth - int(firstFrameUsed * framePixelWidth);
int tiretStart = int(contentMin.y);
int tiretEnd = int(contentMax.y);
if (px <= (canvas_size.x + canvas_pos.x) && px >= (canvas_pos.x + legendWidth))
{
//draw_list->AddLine(ImVec2((float)px, canvas_pos.y + (float)tiretStart), ImVec2((float)px, canvas_pos.y + (float)tiretEnd - 1), 0xFF606060, 1);
draw_list->AddLine(ImVec2(float(px), float(tiretStart)), ImVec2(float(px), float(tiretEnd)), 0x30606060, 1);
}
};
for (int i = sequence->GetFrameMin(); i <= sequence->GetFrameMax(); i += frameStep)
{
drawLine(i, ItemHeight);
}
drawLine(sequence->GetFrameMin(), ItemHeight);
drawLine(sequence->GetFrameMax(), ItemHeight);
/*
draw_list->AddLine(canvas_pos, ImVec2(canvas_pos.x, canvas_pos.y + controlHeight), 0xFF000000, 1);
draw_list->AddLine(ImVec2(canvas_pos.x, canvas_pos.y + ItemHeight), ImVec2(canvas_size.x, canvas_pos.y + ItemHeight), 0xFF000000, 1);
*/
// clip content
draw_list->PushClipRect(childFramePos, childFramePos + childFrameSize);
// draw item names in the legend rect on the left
size_t customHeight = 0;
for (int i = 0; i < sequenceCount; i++)
{
int type;
sequence->Get(i, NULL, NULL, &type, NULL);
ImVec2 tpos(contentMin.x + 3, contentMin.y + i * ItemHeight + 2 + customHeight);
draw_list->AddText(tpos, 0xFFFFFFFF, sequence->GetItemLabel(i));
if (sequenceOptions & SEQUENCER_DEL)
{
bool overDel = SequencerAddDelButton(draw_list, ImVec2(contentMin.x + legendWidth - ItemHeight + 2 - 10, tpos.y + 2), false);
if (overDel && io.MouseReleased[0])
delEntry = i;
bool overDup = SequencerAddDelButton(draw_list, ImVec2(contentMin.x + legendWidth - ItemHeight - ItemHeight + 2 - 10, tpos.y + 2), true);
if (overDup && io.MouseReleased[0])
dupEntry = i;
}
customHeight += sequence->GetCustomHeight(i);
}
// clipping rect so items bars are not visible in the legend on the left when scrolled
//
// slots background
customHeight = 0;
for (int i = 0; i < sequenceCount; i++)
{
unsigned int col = (i & 1) ? 0xFF3A3636 : 0xFF413D3D;
size_t localCustomHeight = sequence->GetCustomHeight(i);
ImVec2 pos = ImVec2(contentMin.x + legendWidth, contentMin.y + ItemHeight * i + 1 + customHeight);
ImVec2 sz = ImVec2(canvas_size.x + canvas_pos.x, pos.y + ItemHeight - 1 + localCustomHeight);
if (!popupOpened && cy >= pos.y && cy < pos.y + (ItemHeight + localCustomHeight) && movingEntry == -1 && cx>contentMin.x && cx < contentMin.x + canvas_size.x)
{
col += 0x80201008;
pos.x -= legendWidth;
}
draw_list->AddRectFilled(pos, sz, col, 0);
customHeight += localCustomHeight;
}
draw_list->PushClipRect(childFramePos + ImVec2(float(legendWidth), 0.f), childFramePos + childFrameSize);
// vertical frame lines in content area
for (int i = sequence->GetFrameMin(); i <= sequence->GetFrameMax(); i += frameStep)
{
drawLineContent(i, int(contentHeight));
}
drawLineContent(sequence->GetFrameMin(), int(contentHeight));
drawLineContent(sequence->GetFrameMax(), int(contentHeight));
// selection
bool selected = selectedEntry && (*selectedEntry >= 0);
if (selected)
{
customHeight = 0;
for (int i = 0; i < *selectedEntry; i++)
customHeight += sequence->GetCustomHeight(i);;
draw_list->AddRectFilled(ImVec2(contentMin.x, contentMin.y + ItemHeight * *selectedEntry + customHeight), ImVec2(contentMin.x + canvas_size.x, contentMin.y + ItemHeight * (*selectedEntry + 1) + customHeight), 0x801080FF, 1.f);
}
// slots
customHeight = 0;
for (int i = 0; i < sequenceCount; i++)
{
int* start, * end;
unsigned int color;
sequence->Get(i, &start, &end, NULL, &color);
size_t localCustomHeight = sequence->GetCustomHeight(i);
ImVec2 pos = ImVec2(contentMin.x + legendWidth - firstFrameUsed * framePixelWidth, contentMin.y + ItemHeight * i + 1 + customHeight);
ImVec2 slotP1(pos.x + *start * framePixelWidth, pos.y + 2);
ImVec2 slotP2(pos.x + *end * framePixelWidth + framePixelWidth, pos.y + ItemHeight - 2);
ImVec2 slotP3(pos.x + *end * framePixelWidth + framePixelWidth, pos.y + ItemHeight - 2 + localCustomHeight);
unsigned int slotColor = color | 0xFF000000;
unsigned int slotColorHalf = (color & 0xFFFFFF) | 0x40000000;
if (slotP1.x <= (canvas_size.x + contentMin.x) && slotP2.x >= (contentMin.x + legendWidth))
{
draw_list->AddRectFilled(slotP1, slotP3, slotColorHalf, 2);
draw_list->AddRectFilled(slotP1, slotP2, slotColor, 2);
}
if (ImRect(slotP1, slotP2).Contains(io.MousePos) && io.MouseDoubleClicked[0])
{
sequence->DoubleClick(i);
}
ImRect rects[3] = { ImRect(slotP1, ImVec2(slotP1.x + framePixelWidth / 2, slotP2.y))
, ImRect(ImVec2(slotP2.x - framePixelWidth / 2, slotP1.y), slotP2)
, ImRect(slotP1, slotP2) };
const unsigned int quadColor[] = { 0xFFFFFFFF, 0xFFFFFFFF, slotColor + (selected ? 0 : 0x202020) };
if (movingEntry == -1 && (sequenceOptions & SEQUENCER_EDIT_STARTEND))// TODOFOCUS && backgroundRect.Contains(io.MousePos))
{
for (int j = 2; j >= 0; j--)
{
ImRect& rc = rects[j];
if (!rc.Contains(io.MousePos))
continue;
draw_list->AddRectFilled(rc.Min, rc.Max, quadColor[j], 2);
}
for (int j = 0; j < 3; j++)
{
ImRect& rc = rects[j];
if (!rc.Contains(io.MousePos))
continue;
if (!ImRect(childFramePos, childFramePos + childFrameSize).Contains(io.MousePos))
continue;
if (ImGui::IsMouseClicked(0) && !MovingScrollBar && !MovingCurrentFrame)
{
movingEntry = i;
movingPos = cx;
movingPart = j + 1;
sequence->BeginEdit(movingEntry);
break;
}
}
}
// custom draw
if (localCustomHeight > 0)
{
ImVec2 rp(canvas_pos.x, contentMin.y + ItemHeight * i + 1 + customHeight);
ImRect customRect(rp + ImVec2(legendWidth - (firstFrameUsed - sequence->GetFrameMin() - 0.5f) * framePixelWidth, float(ItemHeight)),
rp + ImVec2(legendWidth + (sequence->GetFrameMax() - firstFrameUsed - 0.5f + 2.f) * framePixelWidth, float(localCustomHeight + ItemHeight)));
ImRect clippingRect(rp + ImVec2(float(legendWidth), float(ItemHeight)), rp + ImVec2(canvas_size.x, float(localCustomHeight + ItemHeight)));
ImRect legendRect(rp + ImVec2(0.f, float(ItemHeight)), rp + ImVec2(float(legendWidth), float(localCustomHeight)));
ImRect legendClippingRect(canvas_pos + ImVec2(0.f, float(ItemHeight)), canvas_pos + ImVec2(float(legendWidth), float(localCustomHeight + ItemHeight)));
customDraws.push_back({ i, customRect, legendRect, clippingRect, legendClippingRect });
}
else
{
ImVec2 rp(canvas_pos.x, contentMin.y + ItemHeight * i + customHeight);
ImRect customRect(rp + ImVec2(legendWidth - (firstFrameUsed - sequence->GetFrameMin() - 0.5f) * framePixelWidth, float(0.f)),
rp + ImVec2(legendWidth + (sequence->GetFrameMax() - firstFrameUsed - 0.5f + 2.f) * framePixelWidth, float(ItemHeight)));
ImRect clippingRect(rp + ImVec2(float(legendWidth), float(0.f)), rp + ImVec2(canvas_size.x, float(ItemHeight)));
compactCustomDraws.push_back({ i, customRect, ImRect(), clippingRect, ImRect() });
}
customHeight += localCustomHeight;
}
// moving
if (/*backgroundRect.Contains(io.MousePos) && */movingEntry >= 0)
{
ImGui::CaptureMouseFromApp();
int diffFrame = int((cx - movingPos) / framePixelWidth);
if (std::abs(diffFrame) > 0)
{
int* start, * end;
sequence->Get(movingEntry, &start, &end, NULL, NULL);
if (selectedEntry)
*selectedEntry = movingEntry;
int& l = *start;
int& r = *end;
if (movingPart & 1)
l += diffFrame;
if (movingPart & 2)
r += diffFrame;
if (l < 0)
{
if (movingPart & 2)
r -= l;
l = 0;
}
if (movingPart & 1 && l > r)
l = r;
if (movingPart & 2 && r < l)
r = l;
movingPos += int(diffFrame * framePixelWidth);
}
if (!io.MouseDown[0])
{
// single select
if (!diffFrame && movingPart && selectedEntry)
{
*selectedEntry = movingEntry;
ret = true;
}
movingEntry = -1;
sequence->EndEdit();
}
}
// cursor
if (currentFrame && firstFrame && *currentFrame >= *firstFrame && *currentFrame <= sequence->GetFrameMax())
{
static const float cursorWidth = 8.f;
float cursorOffset = contentMin.x + legendWidth + (*currentFrame - firstFrameUsed) * framePixelWidth + framePixelWidth / 2 - cursorWidth * 0.5f;
draw_list->AddLine(ImVec2(cursorOffset, canvas_pos.y), ImVec2(cursorOffset, contentMax.y), 0xA02A2AFF, cursorWidth);
char tmps[512];
ImFormatString(tmps, IM_ARRAYSIZE(tmps), "%d", *currentFrame);
draw_list->AddText(ImVec2(cursorOffset + 10, canvas_pos.y + 2), 0xFF2A2AFF, tmps);
}
draw_list->PopClipRect();
draw_list->PopClipRect();
for (auto& customDraw : customDraws)
sequence->CustomDraw(customDraw.index, draw_list, customDraw.customRect, customDraw.legendRect, customDraw.clippingRect, customDraw.legendClippingRect);
for (auto& customDraw : compactCustomDraws)
sequence->CustomDrawCompact(customDraw.index, draw_list, customDraw.customRect, customDraw.clippingRect);
// copy paste
if (sequenceOptions & SEQUENCER_COPYPASTE)
{
ImRect rectCopy(ImVec2(contentMin.x + 100, canvas_pos.y + 2)
, ImVec2(contentMin.x + 100 + 30, canvas_pos.y + ItemHeight - 2));
bool inRectCopy = rectCopy.Contains(io.MousePos);
unsigned int copyColor = inRectCopy ? 0xFF1080FF : 0xFF000000;
draw_list->AddText(rectCopy.Min, copyColor, "Copy");
ImRect rectPaste(ImVec2(contentMin.x + 140, canvas_pos.y + 2)
, ImVec2(contentMin.x + 140 + 30, canvas_pos.y + ItemHeight - 2));
bool inRectPaste = rectPaste.Contains(io.MousePos);
unsigned int pasteColor = inRectPaste ? 0xFF1080FF : 0xFF000000;
draw_list->AddText(rectPaste.Min, pasteColor, "Paste");
if (inRectCopy && io.MouseReleased[0])
{
sequence->Copy();
}
if (inRectPaste && io.MouseReleased[0])
{
sequence->Paste();
}
}
//
ImGui::EndChildFrame();
ImGui::PopStyleColor();
if (hasScrollBar)
{
ImGui::InvisibleButton("scrollBar", scrollBarSize);
ImVec2 scrollBarMin = ImGui::GetItemRectMin();
ImVec2 scrollBarMax = ImGui::GetItemRectMax();
// ratio = number of frames visible in control / number to total frames
float startFrameOffset = ((float)(firstFrameUsed - sequence->GetFrameMin()) / (float)frameCount) * (canvas_size.x - legendWidth);
ImVec2 scrollBarA(scrollBarMin.x + legendWidth, scrollBarMin.y - 2);
ImVec2 scrollBarB(scrollBarMin.x + canvas_size.x, scrollBarMax.y - 1);
draw_list->AddRectFilled(scrollBarA, scrollBarB, 0xFF222222, 0);
ImRect scrollBarRect(scrollBarA, scrollBarB);
bool inScrollBar = scrollBarRect.Contains(io.MousePos);
draw_list->AddRectFilled(scrollBarA, scrollBarB, 0xFF101010, 8);
ImVec2 scrollBarC(scrollBarMin.x + legendWidth + startFrameOffset, scrollBarMin.y);
ImVec2 scrollBarD(scrollBarMin.x + legendWidth + barWidthInPixels + startFrameOffset, scrollBarMax.y - 2);
draw_list->AddRectFilled(scrollBarC, scrollBarD, (inScrollBar || MovingScrollBar) ? 0xFF606060 : 0xFF505050, 6);
ImRect barHandleLeft(scrollBarC, ImVec2(scrollBarC.x + 14, scrollBarD.y));
ImRect barHandleRight(ImVec2(scrollBarD.x - 14, scrollBarC.y), scrollBarD);
bool onLeft = barHandleLeft.Contains(io.MousePos);
bool onRight = barHandleRight.Contains(io.MousePos);
static bool sizingRBar = false;
static bool sizingLBar = false;
draw_list->AddRectFilled(barHandleLeft.Min, barHandleLeft.Max, (onLeft || sizingLBar) ? 0xFFAAAAAA : 0xFF666666, 6);
draw_list->AddRectFilled(barHandleRight.Min, barHandleRight.Max, (onRight || sizingRBar) ? 0xFFAAAAAA : 0xFF666666, 6);
ImRect scrollBarThumb(scrollBarC, scrollBarD);
static const float MinBarWidth = 44.f;
if (sizingRBar)
{
if (!io.MouseDown[0])
{
sizingRBar = false;
}
else
{
float barNewWidth = ImMax(barWidthInPixels + io.MouseDelta.x, MinBarWidth);
float barRatio = barNewWidth / barWidthInPixels;
framePixelWidthTarget = framePixelWidth = framePixelWidth / barRatio;
int newVisibleFrameCount = int((canvas_size.x - legendWidth) / framePixelWidthTarget);
int lastFrame = *firstFrame + newVisibleFrameCount;
if (lastFrame > sequence->GetFrameMax())
{
framePixelWidthTarget = framePixelWidth = (canvas_size.x - legendWidth) / float(sequence->GetFrameMax() - *firstFrame);
}
}
}
else if (sizingLBar)
{
if (!io.MouseDown[0])
{
sizingLBar = false;
}
else
{
if (fabsf(io.MouseDelta.x) > FLT_EPSILON)
{
float barNewWidth = ImMax(barWidthInPixels - io.MouseDelta.x, MinBarWidth);
float barRatio = barNewWidth / barWidthInPixels;
float previousFramePixelWidthTarget = framePixelWidthTarget;
framePixelWidthTarget = framePixelWidth = framePixelWidth / barRatio;
int newVisibleFrameCount = int(visibleFrameCount / barRatio);
int newFirstFrame = *firstFrame + newVisibleFrameCount - visibleFrameCount;
newFirstFrame = ImClamp(newFirstFrame, sequence->GetFrameMin(), ImMax(sequence->GetFrameMax() - visibleFrameCount, sequence->GetFrameMin()));
if (newFirstFrame == *firstFrame)
{
framePixelWidth = framePixelWidthTarget = previousFramePixelWidthTarget;
}
else
{
*firstFrame = newFirstFrame;
}
}
}
}
else
{
if (MovingScrollBar)
{
if (!io.MouseDown[0])
{
MovingScrollBar = false;
}
else
{
float framesPerPixelInBar = barWidthInPixels / (float)visibleFrameCount;
*firstFrame = int((io.MousePos.x - panningViewSource.x) / framesPerPixelInBar) - panningViewFrame;
*firstFrame = ImClamp(*firstFrame, sequence->GetFrameMin(), ImMax(sequence->GetFrameMax() - visibleFrameCount, sequence->GetFrameMin()));
}
}
else
{
if (scrollBarThumb.Contains(io.MousePos) && ImGui::IsMouseClicked(0) && firstFrame && !MovingCurrentFrame && movingEntry == -1)
{
MovingScrollBar = true;
panningViewSource = io.MousePos;
panningViewFrame = -*firstFrame;
}
if (!sizingRBar && onRight && ImGui::IsMouseClicked(0))
sizingRBar = true;
if (!sizingLBar && onLeft && ImGui::IsMouseClicked(0))
sizingLBar = true;
}
}
}
}
ImGui::EndGroup();
if (regionRect.Contains(io.MousePos))
{
bool overCustomDraw = false;
for (auto& custom : customDraws)
{
if (custom.customRect.Contains(io.MousePos))
{
overCustomDraw = true;
}
}
if (overCustomDraw)
{
}
else
{
#if 0
frameOverCursor = *firstFrame + (int)(visibleFrameCount * ((io.MousePos.x - (float)legendWidth - canvas_pos.x) / (canvas_size.x - legendWidth)));
//frameOverCursor = max(min(*firstFrame - visibleFrameCount / 2, frameCount - visibleFrameCount), 0);
/**firstFrame -= frameOverCursor;
*firstFrame *= framePixelWidthTarget / framePixelWidth;
*firstFrame += frameOverCursor;*/
if (io.MouseWheel < -FLT_EPSILON)
{
*firstFrame -= frameOverCursor;
*firstFrame = int(*firstFrame * 1.1f);
framePixelWidthTarget *= 0.9f;
*firstFrame += frameOverCursor;
}
if (io.MouseWheel > FLT_EPSILON)
{
*firstFrame -= frameOverCursor;
*firstFrame = int(*firstFrame * 0.9f);
framePixelWidthTarget *= 1.1f;
*firstFrame += frameOverCursor;
}
#endif
}
}
if (expanded)
{
bool overExpanded = SequencerAddDelButton(draw_list, ImVec2(canvas_pos.x + 2, canvas_pos.y + 2), !*expanded);
if (overExpanded && io.MouseReleased[0])
*expanded = !*expanded;
}
if (delEntry != -1)
{
sequence->Del(delEntry);
if (selectedEntry && (*selectedEntry == delEntry || *selectedEntry >= sequence->GetItemCount()))
*selectedEntry = -1;
}
if (dupEntry != -1)
{
sequence->Duplicate(dupEntry);
}
return ret;
}
}