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Added commentary about ContentRegion functions. Added internal GetContentRegionMaxScreen() to facilitate internal code at the moment.

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This commit is contained in:
omar 2019-04-18 14:10:01 +02:00
parent 9d4a893a77
commit f355a40367
4 changed files with 30 additions and 16 deletions
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26
imgui.cpp
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@ -2978,9 +2978,9 @@ float ImGui::CalcWrapWidthForPos(const ImVec2& pos, float wrap_pos_x)
if (wrap_pos_x < 0.0f)
return 0.0f;
ImGuiWindow* window = GetCurrentWindowRead();
ImGuiWindow* window = GImGui->CurrentWindow;
if (wrap_pos_x == 0.0f)
wrap_pos_x = GetContentRegionMax().x + window->Pos.x;
wrap_pos_x = GetContentRegionMaxScreen().x;
else if (wrap_pos_x > 0.0f)
wrap_pos_x += window->Pos.x - window->Scroll.x; // wrap_pos_x is provided is window local space
@ -5775,7 +5775,7 @@ void ImGui::PopItemWidth()
// Calculate default item width given value passed to PushItemWidth()
float ImGui::CalcItemWidth()
{
ImGuiWindow* window = GetCurrentWindowRead();
ImGuiWindow* window = GImGui->CurrentWindow;
float w = window->DC.ItemWidth;
if (w < 0.0f)
{
@ -5791,10 +5791,10 @@ float ImGui::CalcItemWidth()
// Note that only CalcItemWidth() is publicly exposed.
ImVec2 ImGui::CalcItemSize(ImVec2 size, float default_w, float default_h)
{
ImGuiWindow* window = GetCurrentWindowRead();
ImGuiWindow* window = GImGui->CurrentWindow;
ImVec2 content_max;
if (size.x < 0.0f || size.y < 0.0f)
content_max = window->Pos + GetContentRegionMax();
content_max = GetContentRegionMaxScreen();
if (size.x <= 0.0f)
size.x = (size.x == 0.0f) ? default_w : ImMax(content_max.x - window->DC.CursorPos.x, 4.0f) + size.x;
if (size.y <= 0.0f)
@ -6367,17 +6367,27 @@ void ImGui::SetNextWindowBgAlpha(float alpha)
// FIXME: This is in window space (not screen space!)
ImVec2 ImGui::GetContentRegionMax()
{
ImGuiWindow* window = GetCurrentWindowRead();
ImGuiWindow* window = GImGui->CurrentWindow;
ImVec2 mx = window->ContentsRegionRect.Max - window->Pos;
if (window->DC.CurrentColumns)
mx.x = GetColumnOffset(window->DC.CurrentColumns->Current + 1) - window->WindowPadding.x;
return mx;
}
// [Internal] Absolute coordinate. Saner. This is not exposed until we finishing refactoring work rect features.
ImVec2 ImGui::GetContentRegionMaxScreen()
{
ImGuiWindow* window = GImGui->CurrentWindow;
ImVec2 mx = window->ContentsRegionRect.Max;
if (window->DC.CurrentColumns)
mx.x = window->Pos.x + GetColumnOffset(window->DC.CurrentColumns->Current + 1) - window->WindowPadding.x;
return mx;
}
ImVec2 ImGui::GetContentRegionAvail()
{
ImGuiWindow* window = GetCurrentWindowRead();
return GetContentRegionMax() - (window->DC.CursorPos - window->Pos);
ImGuiWindow* window = GImGui->CurrentWindow;
return GetContentRegionMaxScreen() - window->DC.CursorPos;
}
float ImGui::GetContentRegionAvailWidth()

17
imgui.h
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@ -261,18 +261,12 @@ namespace ImGui
IMGUI_API bool IsWindowFocused(ImGuiFocusedFlags flags=0); // is current window focused? or its root/child, depending on flags. see flags for options.
IMGUI_API bool IsWindowHovered(ImGuiHoveredFlags flags=0); // is current window hovered (and typically: not blocked by a popup/modal)? see flags for options. NB: If you are trying to check whether your mouse should be dispatched to imgui or to your app, you should use the 'io.WantCaptureMouse' boolean for that! Please read the FAQ!
IMGUI_API ImDrawList* GetWindowDrawList(); // get draw list associated to the current window, to append your own drawing primitives
IMGUI_API ImVec2 GetWindowPos(); // get current window position in screen space (useful if you want to do your own drawing via the DrawList API)
IMGUI_API ImVec2 GetWindowSize(); // get current window size
IMGUI_API float GetWindowWidth(); // get current window width (shortcut for GetWindowSize().x)
IMGUI_API float GetWindowHeight(); // get current window height (shortcut for GetWindowSize().y)
IMGUI_API ImVec2 GetContentRegionMax(); // current content boundaries (typically window boundaries including scrolling, or current column boundaries), in windows coordinates
IMGUI_API ImVec2 GetContentRegionAvail(); // == GetContentRegionMax() - GetCursorPos()
IMGUI_API float GetContentRegionAvailWidth(); // == GetContentRegionAvail().x
IMGUI_API ImVec2 GetWindowContentRegionMin(); // content boundaries min (roughly (0,0)-Scroll), in window coordinates
IMGUI_API ImVec2 GetWindowContentRegionMax(); // content boundaries max (roughly (0,0)+Size-Scroll) where Size can be override with SetNextWindowContentSize(), in window coordinates
IMGUI_API float GetWindowContentRegionWidth(); //
// Prefer using SetNextXXX functions (before Begin) rather that SetXXX functions (after Begin).
IMGUI_API void SetNextWindowPos(const ImVec2& pos, ImGuiCond cond = 0, const ImVec2& pivot = ImVec2(0,0)); // set next window position. call before Begin(). use pivot=(0.5f,0.5f) to center on given point, etc.
IMGUI_API void SetNextWindowSize(const ImVec2& size, ImGuiCond cond = 0); // set next window size. set axis to 0.0f to force an auto-fit on this axis. call before Begin()
IMGUI_API void SetNextWindowSizeConstraints(const ImVec2& size_min, const ImVec2& size_max, ImGuiSizeCallback custom_callback = NULL, void* custom_callback_data = NULL); // set next window size limits. use -1,-1 on either X/Y axis to preserve the current size. Use callback to apply non-trivial programmatic constraints.
@ -290,6 +284,15 @@ namespace ImGui
IMGUI_API void SetWindowCollapsed(const char* name, bool collapsed, ImGuiCond cond = 0); // set named window collapsed state
IMGUI_API void SetWindowFocus(const char* name); // set named window to be focused / front-most. use NULL to remove focus.
// Content region
// - Those functions are bound to be redesigned soon (they are confusing, incomplete and return values in local window coordinates which increases confusion)
IMGUI_API ImVec2 GetContentRegionMax(); // current content boundaries (typically window boundaries including scrolling, or current column boundaries), in windows coordinates
IMGUI_API ImVec2 GetContentRegionAvail(); // == GetContentRegionMax() - GetCursorPos()
IMGUI_API float GetContentRegionAvailWidth(); // == GetContentRegionAvail().x
IMGUI_API ImVec2 GetWindowContentRegionMin(); // content boundaries min (roughly (0,0)-Scroll), in window coordinates
IMGUI_API ImVec2 GetWindowContentRegionMax(); // content boundaries max (roughly (0,0)+Size-Scroll) where Size can be override with SetNextWindowContentSize(), in window coordinates
IMGUI_API float GetWindowContentRegionWidth(); //
// Windows Scrolling
IMGUI_API float GetScrollX(); // get scrolling amount [0..GetScrollMaxX()]
IMGUI_API float GetScrollY(); // get scrolling amount [0..GetScrollMaxY()]

1
imgui_internal.h
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@ -1444,6 +1444,7 @@ namespace ImGui
IMGUI_API void PushItemFlag(ImGuiItemFlags option, bool enabled);
IMGUI_API void PopItemFlag();
IMGUI_API bool IsItemToggledSelection(); // was the last item selection toggled? (after Selectable(), TreeNode() etc. We only returns toggle _event_ in order to handle clipping correctly)
IMGUI_API ImVec2 GetContentRegionMaxScreen();
// Logging/Capture
IMGUI_API void LogBegin(ImGuiLogType type, int auto_open_depth); // -> BeginCapture() when we design v2 api, for now stay under the radar by using the old name.

2
imgui_widgets.cpp
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@ -5057,7 +5057,7 @@ bool ImGui::TreeNodeBehavior(ImGuiID id, ImGuiTreeNodeFlags flags, const char* l
// We vertically grow up to current line height up the typical widget height.
const float text_base_offset_y = ImMax(padding.y, window->DC.CurrentLineTextBaseOffset); // Latch before ItemSize changes it
const float frame_height = ImMax(ImMin(window->DC.CurrentLineSize.y, g.FontSize + style.FramePadding.y*2), label_size.y + padding.y*2);
ImRect frame_bb = ImRect(window->DC.CursorPos, ImVec2(window->Pos.x + GetContentRegionMax().x, window->DC.CursorPos.y + frame_height));
ImRect frame_bb = ImRect(window->DC.CursorPos, ImVec2(GetContentRegionMaxScreen().x, window->DC.CursorPos.y + frame_height));
if (display_frame)
{
// Framed header expand a little outside the default padding