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InputText: Tweak ImGuiInputTextFlags_EscapeClearsAll handling so decision is taken on input buffer + Showcase a few more InputText() flags. (#5688, #2620)

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This makes is more obvious that value_change==true when apply_new_text != NULL.
This commit is contained in:
ocornut 2023-07-06 19:27:23 +02:00
parent 6aa408c6af
commit 3349296370
3 changed files with 22 additions and 4 deletions
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1
docs/CHANGELOG.txt
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@ -50,6 +50,7 @@ Other changes:
(what now obsoleted io.ClearInputCharacters() did), as this is effectively the
desirable behavior.
- Demo: Better showcase use of SetNextItemAllowOverlap(). (#6574, #6512, #3909, #517)
- Demo: Showcase a few more InputText() flags.
-----------------------------------------------------------------------

13
imgui_demo.cpp
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@ -1484,6 +1484,7 @@ static void ShowDemoWindowWidgets()
ImGui::TreePop();
}
IMGUI_DEMO_MARKER("Widgets/Text Input/Completion, History, Edit Callbacks");
if (ImGui::TreeNode("Completion, History, Edit Callbacks"))
{
struct Funcs
@ -1583,6 +1584,18 @@ static void ShowDemoWindowWidgets()
ImGui::TreePop();
}
IMGUI_DEMO_MARKER("Widgets/Text Input/Miscellaneous");
if (ImGui::TreeNode("Miscellaneous"))
{
static char buf1[16];
static ImGuiInputTextFlags flags = ImGuiInputTextFlags_EscapeClearsAll;
ImGui::CheckboxFlags("ImGuiInputTextFlags_EscapeClearsAll", &flags, ImGuiInputTextFlags_EscapeClearsAll);
ImGui::CheckboxFlags("ImGuiInputTextFlags_ReadOnly", &flags, ImGuiInputTextFlags_ReadOnly);
ImGui::CheckboxFlags("ImGuiInputTextFlags_NoUndoRedo", &flags, ImGuiInputTextFlags_NoUndoRedo);
ImGui::InputText("Hello", buf1, IM_ARRAYSIZE(buf1), flags);
ImGui::TreePop();
}
ImGui::TreePop();
}

12
imgui_widgets.cpp
View File

@ -4493,7 +4493,7 @@ bool ImGui::InputTextEx(const char* label, const char* hint, char* buf, int buf_
{
if (flags & ImGuiInputTextFlags_EscapeClearsAll)
{
if (state->CurLenA > 0)
if (buf[0] != 0)
{
revert_edit = true;
}
@ -4581,9 +4581,10 @@ bool ImGui::InputTextEx(const char* label, const char* hint, char* buf, int buf_
if (flags & ImGuiInputTextFlags_EscapeClearsAll)
{
// Clear input
IM_ASSERT(buf[0] != 0);
apply_new_text = "";
apply_new_text_length = 0;
value_changed |= (buf[0] != 0);
value_changed = true;
STB_TEXTEDIT_CHARTYPE empty_string;
stb_textedit_replace(state, &state->Stb, &empty_string, 0);
}
@ -4612,9 +4613,12 @@ bool ImGui::InputTextEx(const char* label, const char* hint, char* buf, int buf_
ImTextStrToUtf8(state->TextA.Data, state->TextA.Size, state->TextW.Data, NULL);
}
// When using 'ImGuiInputTextFlags_EnterReturnsTrue' as a special case we reapply the live buffer back to the input buffer before clearing ActiveId, even though strictly speaking it wasn't modified on this frame.
// When using 'ImGuiInputTextFlags_EnterReturnsTrue' as a special case we reapply the live buffer back to the input buffer
// before clearing ActiveId, even though strictly speaking it wasn't modified on this frame.
// If we didn't do that, code like InputInt() with ImGuiInputTextFlags_EnterReturnsTrue would fail.
// This also allows the user to use InputText() with ImGuiInputTextFlags_EnterReturnsTrue without maintaining any user-side storage (please note that if you use this property along ImGuiInputTextFlags_CallbackResize you can end up with your temporary string object unnecessarily allocating once a frame, either store your string data, either if you don't then don't use ImGuiInputTextFlags_CallbackResize).
// This also allows the user to use InputText() with ImGuiInputTextFlags_EnterReturnsTrue without maintaining any user-side storage
// (please note that if you use this property along ImGuiInputTextFlags_CallbackResize you can end up with your temporary string object
// unnecessarily allocating once a frame, either store your string data, either if you don't then don't use ImGuiInputTextFlags_CallbackResize).
const bool apply_edit_back_to_user_buffer = !revert_edit || (validated && (flags & ImGuiInputTextFlags_EnterReturnsTrue) != 0);
if (apply_edit_back_to_user_buffer)
{