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Maintaining DC.CursorMaxPos instead of SizeContentsCurrent, simpler, faster and easier to understand.

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This commit is contained in:
ocornut 2015-03-17 22:03:02 +00:00
parent fd7f50d269
commit 30bc952ac3
1 changed files with 13 additions and 10 deletions
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23
imgui.cpp
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@ -909,6 +909,7 @@ struct ImGuiDrawContext
ImVec2 CursorPos;
ImVec2 CursorPosPrevLine;
ImVec2 CursorStartPos;
ImVec2 CursorMaxPos; // Implicitly calculate the size of our contents, always extending. Saved into window->SizeContents at the end of the frame
float CurrentLineHeight;
float CurrentLineTextBaseOffset;
float PrevLineHeight;
@ -925,7 +926,7 @@ struct ImGuiDrawContext
ImGuiColorEditMode ColorEditMode;
ImGuiStorage* StateStorage;
float ColumnsStartX; // Start position from left of window (increased by TreePush/TreePop, etc.)
float ColumnsStartX; // Indentation / start position from left of window (increased by TreePush/TreePop, etc.)
float ColumnsOffsetX; // Offset to the current column (if ColumnsCurrent > 0). FIXME: This and the above should be a stack to allow use cases like Tree->Column->Tree. Need revamp columns API.
int ColumnsCurrent;
int ColumnsCount;
@ -938,7 +939,7 @@ struct ImGuiDrawContext
ImGuiDrawContext()
{
CursorPos = CursorPosPrevLine = CursorStartPos = ImVec2(0.0f, 0.0f);
CursorPos = CursorPosPrevLine = CursorStartPos = CursorMaxPos = ImVec2(0.0f, 0.0f);
CurrentLineHeight = PrevLineHeight = 0.0f;
CurrentLineTextBaseOffset = PrevLineTextBaseOffset = 0.0f;
LogLinePosY = -1.0f;
@ -1136,7 +1137,6 @@ struct ImGuiWindow
ImVec2 Size; // Current size (==SizeFull or collapsed title bar size)
ImVec2 SizeFull; // Size when non collapsed
ImVec2 SizeContents; // Size of contents (== extents reach of the drawing cursor) from previous frame
ImVec2 SizeContentsCurrent; // Size of contents, currently extending
float ScrollY;
float NextScrollY;
bool ScrollbarY;
@ -1478,7 +1478,7 @@ ImGuiWindow::ImGuiWindow(const char* name)
Flags = 0;
PosFloat = Pos = ImVec2(0.0f, 0.0f);
Size = SizeFull = ImVec2(0.0f, 0.0f);
SizeContents = SizeContentsCurrent = ImVec2(0.0f, 0.0f);
SizeContents = ImVec2(0.0f, 0.0f);
ScrollY = 0.0f;
NextScrollY = 0.0f;
ScrollbarY = false;
@ -2823,8 +2823,8 @@ bool ImGui::Begin(const char* name, bool* p_opened, const ImVec2& size, float bg
window->ClipRectStack.resize(0);
// Reset contents size for auto-fitting
window->SizeContents = window->SizeContentsCurrent;
window->SizeContentsCurrent = ImVec2(0.0f, 0.0f);
window->SizeContents = window->DC.CursorMaxPos - window->Pos;
window->SizeContents.y += window->ScrollY;
if (flags & ImGuiWindowFlags_ChildWindow)
{
@ -3071,6 +3071,7 @@ bool ImGui::Begin(const char* name, bool* p_opened, const ImVec2& size, float bg
window->DC.CursorStartPos = window->Pos + ImVec2(window->DC.ColumnsStartX + window->DC.ColumnsOffsetX, window->TitleBarHeight() + window->WindowPadding().y) - ImVec2(0.0f, window->ScrollY);
window->DC.CursorPos = window->DC.CursorStartPos;
window->DC.CursorPosPrevLine = window->DC.CursorPos;
window->DC.CursorMaxPos = window->DC.CursorStartPos;
window->DC.CurrentLineHeight = window->DC.PrevLineHeight = 0.0f;
window->DC.CurrentLineTextBaseOffset = window->DC.PrevLineTextBaseOffset = 0.0f;
window->DC.LogLinePosY = window->DC.CursorPos.y - 9999.0f;
@ -3762,21 +3763,21 @@ void ImGui::SetCursorPos(const ImVec2& pos)
{
ImGuiWindow* window = GetCurrentWindow();
window->DC.CursorPos = window->Pos + pos;
window->SizeContentsCurrent = ImMax(window->SizeContentsCurrent, pos + ImVec2(0.0f, window->ScrollY));
window->DC.CursorMaxPos = ImMax(window->DC.CursorMaxPos, window->DC.CursorPos);
}
void ImGui::SetCursorPosX(float x)
{
ImGuiWindow* window = GetCurrentWindow();
window->DC.CursorPos.x = window->Pos.x + x;
window->SizeContentsCurrent.x = ImMax(window->SizeContentsCurrent.x, x);
window->DC.CursorMaxPos.x = ImMax(window->DC.CursorMaxPos.x, window->DC.CursorPos.x);
}
void ImGui::SetCursorPosY(float y)
{
ImGuiWindow* window = GetCurrentWindow();
window->DC.CursorPos.y = window->Pos.y + y;
window->SizeContentsCurrent.y = ImMax(window->SizeContentsCurrent.y, y + window->ScrollY);
window->DC.CursorMaxPos.y = ImMax(window->DC.CursorMaxPos.y, window->DC.CursorPos.y);
}
ImVec2 ImGui::GetCursorScreenPos()
@ -6703,8 +6704,10 @@ static void ItemSize(ImVec2 size, float text_offset_y)
const float text_base_offset = ImMax(window->DC.CurrentLineTextBaseOffset, text_offset_y);
window->DC.CursorPosPrevLine = ImVec2(window->DC.CursorPos.x + size.x, window->DC.CursorPos.y);
window->DC.CursorPos = ImVec2((float)(int)(window->Pos.x + window->DC.ColumnsStartX + window->DC.ColumnsOffsetX), (float)(int)(window->DC.CursorPos.y + line_height + g.Style.ItemSpacing.y));
window->DC.CursorMaxPos.x = ImMax(window->DC.CursorMaxPos.x, window->DC.CursorPosPrevLine.x);
window->DC.CursorMaxPos.y = ImMax(window->DC.CursorMaxPos.y, window->DC.CursorPos.y);
window->SizeContentsCurrent = ImMax(window->SizeContentsCurrent, ImVec2(window->DC.CursorPosPrevLine.x - window->Pos.x, window->DC.CursorPos.y + window->ScrollY - window->Pos.y));
//window->DrawList->AddCircle(window->DC.CursorMaxPos, 3.0f, 0xFF0000FF, 4);
window->DC.PrevLineHeight = line_height;
window->DC.PrevLineTextBaseOffset = text_base_offset;