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InputTextMultine() optimised height calculation for inactive multi-line edit box (#200)

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ocornut 2015-06-18 19:09:04 -06:00
parent 86666489df
commit 2b68a5c0cf
1 changed files with 16 additions and 3 deletions
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19
imgui.cpp
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@ -6514,6 +6514,19 @@ bool ImGui::RadioButton(const char* label, int* v, int v_button)
return pressed; return pressed;
} }
static int InputTextCalcTextLenAndLineCount(const char* text_begin, const char** out_text_end)
{
int line_count = 0;
const char* s = text_begin;
while (char c = *s++) // We are only matching for \n so we can ignore UTF-8 decoding
if (c == '\n')
line_count++;
if (s[-1] != '\n' && s[-1] != '\r')
line_count++;
*out_text_end = s-1;
return line_count;
}
static ImVec2 InputTextCalcTextSizeW(const ImWchar* text_begin, const ImWchar* text_end, const ImWchar** remaining = NULL, ImVec2* out_offset = NULL, bool stop_on_new_line = false) static ImVec2 InputTextCalcTextSizeW(const ImWchar* text_begin, const ImWchar* text_end, const ImWchar** remaining = NULL, ImVec2* out_offset = NULL, bool stop_on_new_line = false)
{ {
ImFont* font = GImGui->Font; ImFont* font = GImGui->Font;
@ -7168,10 +7181,10 @@ static bool InputTextEx(const char* label, char* buf, size_t buf_size, const ImV
else else
{ {
// Render text only // Render text only
draw_window->DrawList->AddText(g.Font, g.FontSize, render_pos, draw_window->Color(ImGuiCol_Text), buf, NULL, 0.0f, is_multiline ? NULL : &clip_rect); const char* buf_end = NULL;
if (is_multiline) if (is_multiline)
text_size = g.Font->CalcTextSizeA(g.FontSize, FLT_MAX, 0.0f, buf); text_size = ImVec2(size.x, InputTextCalcTextLenAndLineCount(buf, &buf_end) * g.FontSize); // We don't need width
draw_window->DrawList->AddText(g.Font, g.FontSize, render_pos, draw_window->Color(ImGuiCol_Text), buf, buf_end, 0.0f, is_multiline ? NULL : &clip_rect);
} }
if (is_multiline) if (is_multiline)