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InputText: added ImGuiInputTextFlags_EscapeClearsAll (#5688)

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This commit is contained in:
ocornut 2022-09-20 15:57:58 +02:00
parent 60ab8a94a7
commit 85f327d8d3
4 changed files with 42 additions and 12 deletions
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2
docs/CHANGELOG.txt
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@ -91,6 +91,8 @@ Other Changes:
Enter keep the input active and select all text.
- InputText: numerical fields automatically accept full-width characters (U+FF01..U+FF5E)
by converting them to half-width (U+0021..U+007E).
- InputText: added ImGuiInputTextFlags_EscapeClearsAll flag: first press on Escape clears
text if any, second press deactivate the InputText(). (#5688)
- InputText: added support for shift+click style selection. (#5619) [@procedural]
- InputText: clarified that callbacks cannot modify buffer when using the ReadOnly flag.
- InputText: fixed minor one-frame selection glitch when reverting with Escape.

1
imgui.h
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@ -1007,6 +1007,7 @@ enum ImGuiInputTextFlags_
ImGuiInputTextFlags_CharsScientific = 1 << 17, // Allow 0123456789.+-*/eE (Scientific notation input)
ImGuiInputTextFlags_CallbackResize = 1 << 18, // Callback on buffer capacity changes request (beyond 'buf_size' parameter value), allowing the string to grow. Notify when the string wants to be resized (for string types which hold a cache of their Size). You will be provided a new BufSize in the callback and NEED to honor it. (see misc/cpp/imgui_stdlib.h for an example of using this)
ImGuiInputTextFlags_CallbackEdit = 1 << 19, // Callback on any edit (note that InputText() already returns true on edit, the callback is useful mainly to manipulate the underlying buffer while focus is active)
ImGuiInputTextFlags_EscapeClearsAll = 1 << 20, // Escape key clears content if not empty, and deactivate otherwise (constrast to default behavior of Escape to revert)
// Obsolete names (will be removed soon)
#ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS

14
imgui_demo.cpp
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@ -8,11 +8,15 @@
// Read imgui.cpp for more details, documentation and comments.
// Get the latest version at https://github.com/ocornut/imgui
// -------------------------------------------------
// PLEASE DO NOT REMOVE THIS FILE FROM YOUR PROJECT!
// -------------------------------------------------
// Message to the person tempted to delete this file when integrating Dear ImGui into their codebase:
// Do NOT remove this file from your project! Think again! It is the most useful reference code that you and other
// coders will want to refer to and call. Have the ImGui::ShowDemoWindow() function wired in an always-available
// debug menu of your game/app! Removing this file from your project is hindering access to documentation for everyone
// in your team, likely leading you to poorer usage of the library.
// Think again! It is the most useful reference code that you and other coders will want to refer to and call.
// Have the ImGui::ShowDemoWindow() function wired in an always-available debug menu of your game/app!
// Also include Metrics! ItemPicker! DebugLog! and other debug features.
// Removing this file from your project is hindering access to documentation for everyone in your team,
// likely leading you to poorer usage of the library.
// Everything in this file will be stripped out by the linker if you don't call ImGui::ShowDemoWindow().
// If you want to link core Dear ImGui in your shipped builds but want a thorough guarantee that the demo will not be
// linked, you can setup your imconfig.h with #define IMGUI_DISABLE_DEMO_WINDOWS and those functions will be empty.
@ -6718,7 +6722,7 @@ struct ExampleAppConsole
// Command-line
bool reclaim_focus = false;
ImGuiInputTextFlags input_text_flags = ImGuiInputTextFlags_EnterReturnsTrue | ImGuiInputTextFlags_CallbackCompletion | ImGuiInputTextFlags_CallbackHistory;
ImGuiInputTextFlags input_text_flags = ImGuiInputTextFlags_EnterReturnsTrue | ImGuiInputTextFlags_EscapeClearsAll | ImGuiInputTextFlags_CallbackCompletion | ImGuiInputTextFlags_CallbackHistory;
if (ImGui::InputText("Input", InputBuf, IM_ARRAYSIZE(InputBuf), input_text_flags, &TextEditCallbackStub, (void*)this))
{
char* s = InputBuf;

37
imgui_widgets.cpp
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@ -4301,7 +4301,7 @@ bool ImGui::InputTextEx(const char* label, const char* hint, char* buf, int buf_
}
// Process other shortcuts/key-presses
bool cancel_edit = false;
bool revert_edit = false;
if (g.ActiveId == id && !g.ActiveIdIsJustActivated && !clear_active_id)
{
IM_ASSERT(state != NULL);
@ -4372,8 +4372,23 @@ bool ImGui::InputTextEx(const char* label, const char* hint, char* buf, int buf_
}
else if (is_cancel)
{
clear_active_id = cancel_edit = true;
render_cursor = render_selection = false;
if (flags & ImGuiInputTextFlags_EscapeClearsAll)
{
if (state->CurLenA > 0)
{
revert_edit = true;
}
else
{
render_cursor = render_selection = false;
clear_active_id = true;
}
}
else
{
clear_active_id = revert_edit = true;
render_cursor = render_selection = false;
}
}
else if (is_undo || is_redo)
{
@ -4444,11 +4459,19 @@ bool ImGui::InputTextEx(const char* label, const char* hint, char* buf, int buf_
if (g.ActiveId == id)
{
IM_ASSERT(state != NULL);
if (cancel_edit && !is_readonly)
if (revert_edit && !is_readonly)
{
// Restore initial value. Only return true if restoring to the initial value changes the current buffer contents.
if (strcmp(buf, state->InitialTextA.Data) != 0)
if (flags & ImGuiInputTextFlags_EscapeClearsAll)
{
// Clear input
apply_new_text = "";
apply_new_text_length = 0;
STB_TEXTEDIT_CHARTYPE empty_string;
stb_textedit_replace(state, &state->Stb, &empty_string, 0);
}
else if (strcmp(buf, state->InitialTextA.Data) != 0)
{
// Restore initial value. Only return true if restoring to the initial value changes the current buffer contents.
// Push records into the undo stack so we can CTRL+Z the revert operation itself
apply_new_text = state->InitialTextA.Data;
apply_new_text_length = state->InitialTextA.Size - 1;
@ -4473,7 +4496,7 @@ bool ImGui::InputTextEx(const char* label, const char* hint, char* buf, int buf_
// 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).
const bool apply_edit_back_to_user_buffer = !cancel_edit || (validated && (flags & ImGuiInputTextFlags_EnterReturnsTrue) != 0);
const bool apply_edit_back_to_user_buffer = !revert_edit || (validated && (flags & ImGuiInputTextFlags_EnterReturnsTrue) != 0);
if (apply_edit_back_to_user_buffer)
{
// Apply new value immediately - copy modified buffer back