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Begin: Moving some code into a CalcSizeAutoFit() function.

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This commit is contained in:
omar 2017-09-25 21:57:42 +02:00
parent 0d56140b4a
commit 4b2781fe87
1 changed files with 27 additions and 21 deletions
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48
imgui.cpp
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@ -3912,6 +3912,30 @@ static ImVec2 CalcSizeFullWithConstraint(ImGuiWindow* window, ImVec2 new_size)
return new_size; return new_size;
} }
static ImVec2 CalcSizeAutoFit(ImGuiWindow* window)
{
ImGuiContext& g = *GImGui;
ImGuiStyle& style = g.Style;
ImGuiWindowFlags flags = window->Flags;
ImVec2 size_auto_fit;
if ((flags & ImGuiWindowFlags_Tooltip) != 0)
{
// Tooltip always resize. We keep the spacing symmetric on both axises for aesthetic purpose.
size_auto_fit = window->SizeContents + window->WindowPadding - ImVec2(0.0f, style.ItemSpacing.y);
}
else
{
// Handling case of auto fit window not fitting in screen on one axis, we are growing auto fit size on the other axis to compensate for expected scrollbar. FIXME: Might turn bigger than DisplaySize-WindowPadding.
size_auto_fit = ImClamp(window->SizeContents + window->WindowPadding, style.WindowMinSize, ImMax(style.WindowMinSize, g.IO.DisplaySize - g.Style.DisplaySafeAreaPadding));
if (size_auto_fit.x < window->SizeContents.x && !(flags & ImGuiWindowFlags_NoScrollbar) && (flags & ImGuiWindowFlags_HorizontalScrollbar))
size_auto_fit.y += style.ScrollbarSize;
if (size_auto_fit.y < window->SizeContents.y && !(flags & ImGuiWindowFlags_NoScrollbar))
size_auto_fit.x += style.ScrollbarSize;
size_auto_fit.y = ImMax(size_auto_fit.y - style.ItemSpacing.y, 0.0f);
}
return size_auto_fit;
}
static ImVec2 CalcNextScrollFromScrollTargetAndClamp(ImGuiWindow* window) static ImVec2 CalcNextScrollFromScrollTargetAndClamp(ImGuiWindow* window)
{ {
ImVec2 scroll = window->Scroll; ImVec2 scroll = window->Scroll;
@ -4002,7 +4026,7 @@ bool ImGui::Begin(const char* name, bool* p_open, const ImVec2& size_on_first_us
if (window_pos_set_by_api && ImLengthSqr(g.SetNextWindowPosPivot) > 0.00001f) if (window_pos_set_by_api && ImLengthSqr(g.SetNextWindowPosPivot) > 0.00001f)
{ {
// May be processed on the next frame if this is our first frame and we are measuring size // May be processed on the next frame if this is our first frame and we are measuring size
// FIXME: Look into removing the branch so everything can go through this same codepath for consistency. // FIXME: Look into removing the branch so everything can go through this same code path for consistency.
window->SetWindowPosVal = g.SetNextWindowPosVal; window->SetWindowPosVal = g.SetNextWindowPosVal;
window->SetWindowPosPivot = g.SetNextWindowPosPivot; window->SetWindowPosPivot = g.SetNextWindowPosPivot;
window->SetWindowPosAllowFlags &= ~(ImGuiCond_Once | ImGuiCond_FirstUseEver | ImGuiCond_Appearing); window->SetWindowPosAllowFlags &= ~(ImGuiCond_Once | ImGuiCond_FirstUseEver | ImGuiCond_Appearing);
@ -4122,26 +4146,8 @@ bool ImGui::Begin(const char* name, bool* p_open, const ImVec2& size_on_first_us
// Lock window padding so that altering the ShowBorders flag for children doesn't have side-effects. // Lock window padding so that altering the ShowBorders flag for children doesn't have side-effects.
window->WindowPadding = ((flags & ImGuiWindowFlags_ChildWindow) && !(flags & (ImGuiWindowFlags_AlwaysUseWindowPadding | ImGuiWindowFlags_ShowBorders | ImGuiWindowFlags_ComboBox | ImGuiWindowFlags_Popup))) ? ImVec2(0,0) : style.WindowPadding; window->WindowPadding = ((flags & ImGuiWindowFlags_ChildWindow) && !(flags & (ImGuiWindowFlags_AlwaysUseWindowPadding | ImGuiWindowFlags_ShowBorders | ImGuiWindowFlags_ComboBox | ImGuiWindowFlags_Popup))) ? ImVec2(0,0) : style.WindowPadding;
// Calculate auto-fit size // Calculate auto-fit size, handle automatic resize
ImVec2 size_auto_fit; const ImVec2 size_auto_fit = CalcSizeAutoFit(window);
if ((flags & ImGuiWindowFlags_Tooltip) != 0)
{
// Tooltip always resize. We keep the spacing symmetric on both axises for aesthetic purpose.
size_auto_fit = window->SizeContents + window->WindowPadding - ImVec2(0.0f, style.ItemSpacing.y);
}
else
{
size_auto_fit = ImClamp(window->SizeContents + window->WindowPadding, style.WindowMinSize, ImMax(style.WindowMinSize, g.IO.DisplaySize - g.Style.DisplaySafeAreaPadding));
// Handling case of auto fit window not fitting in screen on one axis, we are growing auto fit size on the other axis to compensate for expected scrollbar. FIXME: Might turn bigger than DisplaySize-WindowPadding.
if (size_auto_fit.x < window->SizeContents.x && !(flags & ImGuiWindowFlags_NoScrollbar) && (flags & ImGuiWindowFlags_HorizontalScrollbar))
size_auto_fit.y += style.ScrollbarSize;
if (size_auto_fit.y < window->SizeContents.y && !(flags & ImGuiWindowFlags_NoScrollbar))
size_auto_fit.x += style.ScrollbarSize;
size_auto_fit.y = ImMax(size_auto_fit.y - style.ItemSpacing.y, 0.0f);
}
// Handle automatic resize
if (window->Collapsed) if (window->Collapsed)
{ {
// We still process initial auto-fit on collapsed windows to get a window width, // We still process initial auto-fit on collapsed windows to get a window width,