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InputText() last active preserve scrolling position. Reset scroll if widget size becomes bigger than contents.

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This commit is contained in:
ocornut 2015-03-19 16:45:37 +00:00
parent d1aca79f4e
commit ff5378bd66
1 changed files with 20 additions and 4 deletions
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24
imgui.cpp
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@ -5562,6 +5562,18 @@ void ImGuiTextEditState::UpdateScrollOffset()
// Scroll in chunks of quarter width
const float scroll_x_increment = Width * 0.25f;
const float cursor_offset_x = Font->CalcTextSizeW(FontSize, FLT_MAX, Text, Text+StbState.cursor, NULL).x;
// If widget became bigger than text (because of a resize), reset horizontal scrolling
if (ScrollX > 0.0f)
{
const float text_width = cursor_offset_x + Font->CalcTextSizeW(FontSize, FLT_MAX, Text+StbState.cursor, NULL, NULL).x;
if (text_width < Width)
{
ScrollX = 0.0f;
return;
}
}
if (cursor_offset_x < ScrollX)
ScrollX = ImMax(0.0f, cursor_offset_x - scroll_x_increment);
else if (cursor_offset_x - Width >= ScrollX)
@ -5873,14 +5885,18 @@ bool ImGui::InputText(const char* label, char* buf, size_t buf_size, ImGuiInputT
bool cancel_edit = false;
bool enter_pressed = false;
if (g.ActiveId == id)
//if (edit_state.Id == id) // Works, but double-click to select-all sets cursors to end which in turn tends to scroll toward the right when shrinking widget.
{
// Edit in progress
// Update some data if we are active or last active
edit_state.Width = w + style.FramePadding.x;
edit_state.BufSizeA = buf_size;
edit_state.Font = window->Font();
edit_state.FontSize = window->FontSize();
edit_state.UpdateScrollOffset();
}
if (g.ActiveId == id)
{
// Edit in progress
const float mx = g.IO.MousePos.x - frame_bb.Min.x - style.FramePadding.x;
const float my = window->FontSize()*0.5f; // Flatten mouse because we are doing a single-line edit
@ -6083,8 +6099,8 @@ bool ImGui::InputText(const char* label, char* buf, size_t buf_size, ImGuiInputT
}
}
const float render_scroll_x = (g.ActiveId == id) ? edit_state.ScrollX : 0.0f;
//const float render_scroll_x = (edit_state.Id == id) ? edit_state.ScrollX : 0.0f;
//const float render_scroll_x = (g.ActiveId == id) ? edit_state.ScrollX : 0.0f;
const float render_scroll_x = (edit_state.Id == id) ? edit_state.ScrollX : 0.0f;
ImGuiTextEditState::RenderTextScrolledClipped(window->Font(), window->FontSize(), buf, frame_bb.Min + style.FramePadding, w + style.FramePadding.x, render_scroll_x);
if (g.ActiveId == id)