Drezil/imgui
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f71cdd13b7  Internal tidying up, moved code to CalcNextScrollFromScrollTargetAndClamp() so it can be reused by upcoming nav code.
c816e6c742 Fixed SetScrollX() handling of center ratio (which actually wasn't exposed publicly). (#323, #246)
This commit is contained in:
omar 2017-08-29 17:09:44 +08:00
parent 287a4b6b38
commit c9298c2657
1 changed files with 21 additions and 17 deletions
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38
imgui.cpp
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@ -609,6 +609,7 @@ static inline bool IsWindowContentHoverable(ImGuiWindow* window);
static void ClearSetNextWindowData();
static void CheckStacksSize(ImGuiWindow* window, bool write);
static void Scrollbar(ImGuiWindow* window, bool horizontal);
static ImVec2 CalcNextScrollFromScrollTargetAndClamp(ImGuiWindow* window);
static void AddDrawListToRenderList(ImVector<ImDrawList*>& out_render_list, ImDrawList* draw_list);
static void AddWindowToRenderList(ImVector<ImDrawList*>& out_render_list, ImGuiWindow* window);
@ -3894,6 +3895,24 @@ static void ApplySizeFullWithConstraint(ImGuiWindow* window, ImVec2 new_size)
window->SizeFull = new_size;
}
static ImVec2 CalcNextScrollFromScrollTargetAndClamp(ImGuiWindow* window)
{
ImVec2 scroll = window->Scroll;
float cr_x = window->ScrollTargetCenterRatio.x;
float cr_y = window->ScrollTargetCenterRatio.y;
if (window->ScrollTarget.x < FLT_MAX)
scroll.x = window->ScrollTarget.x - cr_x * (window->SizeFull.x - window->ScrollbarSizes.x);
if (window->ScrollTarget.y < FLT_MAX)
scroll.y = window->ScrollTarget.y - (1.0f - cr_y) * (window->TitleBarHeight() + window->MenuBarHeight()) - cr_y * (window->SizeFull.y - window->ScrollbarSizes.y);
scroll = ImMax(scroll, ImVec2(0.0f, 0.0f));
if (!window->Collapsed && !window->SkipItems)
{
scroll.x = ImMin(scroll.x, ImMax(0.0f, window->SizeContents.x - (window->SizeFull.x - window->ScrollbarSizes.x))); // == GetScrollMaxX for that window
scroll.y = ImMin(scroll.y, ImMax(0.0f, window->SizeContents.y - (window->SizeFull.y - window->ScrollbarSizes.y))); // == GetScrollMaxY for that window
}
return scroll;
}
// Push a new ImGui window to add widgets to.
// - A default window called "Debug" is automatically stacked at the beginning of every frame so you can use widgets without explicitly calling a Begin/End pair.
// - Begin/End can be called multiple times during the frame with the same window name to append content.
@ -4208,23 +4227,8 @@ bool ImGui::Begin(const char* name, bool* p_open, const ImVec2& size_on_first_us
window->FocusIdxAllRequestNext = window->FocusIdxTabRequestNext = INT_MAX;
// Apply scrolling
if (window->ScrollTarget.x < FLT_MAX)
{
window->Scroll.x = window->ScrollTarget.x;
window->ScrollTarget.x = FLT_MAX;
}
if (window->ScrollTarget.y < FLT_MAX)
{
float center_ratio = window->ScrollTargetCenterRatio.y;
window->Scroll.y = window->ScrollTarget.y - ((1.0f - center_ratio) * (window->TitleBarHeight() + window->MenuBarHeight())) - (center_ratio * (window->SizeFull.y - window->ScrollbarSizes.y));
window->ScrollTarget.y = FLT_MAX;
}
window->Scroll = ImMax(window->Scroll, ImVec2(0.0f, 0.0f));
if (!window->Collapsed && !window->SkipItems)
{
window->Scroll.x = ImMin(window->Scroll.x, GetScrollMaxX());
window->Scroll.y = ImMin(window->Scroll.y, GetScrollMaxY());
}
window->Scroll = CalcNextScrollFromScrollTargetAndClamp(window);
window->ScrollTarget = ImVec2(FLT_MAX, FLT_MAX);
// Modal window darkens what is behind them
if ((flags & ImGuiWindowFlags_Modal) != 0 && window == GetFrontMostModalRootWindow())