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InputText: Internals: moved "apply_new_text" application code to reduce noise in a future commit (will be for #4714) + removed unused fields.

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The move would ideally be no-op. technically we now clear state->Flags before calling ResizeCallback but those are unrelated. The 2 unused fields were incorrectly added by 24ff25981.
This commit is contained in:
ocornut
2021-11-24 21:41:34 +01:00
parent 5ac25e7c7a
commit 65f4be1a10
3 changed files with 33 additions and 39 deletions
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66
imgui_widgets.cpp
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@ -4165,8 +4165,6 @@ bool ImGui::InputTextEx(const char* label, const char* hint, char* buf, int buf_
state->Edited = false;
state->BufCapacityA = buf_size;
state->Flags = flags;
state->UserCallback = callback;
state->UserCallbackData = callback_user_data;
// Although we are active we don't prevent mouse from hovering other elements unless we are interacting right now with the widget.
// Down the line we should have a cleaner library-wide concept of Selected vs Active.
@ -4404,11 +4402,11 @@ bool ImGui::InputTextEx(const char* label, const char* hint, char* buf, int buf_
}
// Process callbacks and apply result back to user's buffer.
const char* apply_new_text = NULL;
int apply_new_text_length = 0;
if (g.ActiveId == id)
{
IM_ASSERT(state != NULL);
const char* apply_new_text = NULL;
int apply_new_text_length = 0;
if (cancel_edit)
{
// Restore initial value. Only return true if restoring to the initial value changes the current buffer contents.
@ -4528,39 +4526,37 @@ bool ImGui::InputTextEx(const char* label, const char* hint, char* buf, int buf_
}
}
// Copy result to user buffer
if (apply_new_text)
{
// We cannot test for 'backup_current_text_length != apply_new_text_length' here because we have no guarantee that the size
// of our owned buffer matches the size of the string object held by the user, and by design we allow InputText() to be used
// without any storage on user's side.
IM_ASSERT(apply_new_text_length >= 0);
if (is_resizable)
{
ImGuiInputTextCallbackData callback_data;
callback_data.EventFlag = ImGuiInputTextFlags_CallbackResize;
callback_data.Flags = flags;
callback_data.Buf = buf;
callback_data.BufTextLen = apply_new_text_length;
callback_data.BufSize = ImMax(buf_size, apply_new_text_length + 1);
callback_data.UserData = callback_user_data;
callback(&callback_data);
buf = callback_data.Buf;
buf_size = callback_data.BufSize;
apply_new_text_length = ImMin(callback_data.BufTextLen, buf_size - 1);
IM_ASSERT(apply_new_text_length <= buf_size);
}
//IMGUI_DEBUG_LOG("InputText(\"%s\"): apply_new_text length %d\n", label, apply_new_text_length);
// If the underlying buffer resize was denied or not carried to the next frame, apply_new_text_length+1 may be >= buf_size.
ImStrncpy(buf, apply_new_text, ImMin(apply_new_text_length + 1, buf_size));
value_changed = true;
}
// Clear temporary user storage
state->Flags = ImGuiInputTextFlags_None;
state->UserCallback = NULL;
state->UserCallbackData = NULL;
}
// Copy result to user buffer. This can currently only happen when (g.ActiveId == id)
if (apply_new_text != NULL)
{
// We cannot test for 'backup_current_text_length != apply_new_text_length' here because we have no guarantee that the size
// of our owned buffer matches the size of the string object held by the user, and by design we allow InputText() to be used
// without any storage on user's side.
IM_ASSERT(apply_new_text_length >= 0);
if (is_resizable)
{
ImGuiInputTextCallbackData callback_data;
callback_data.EventFlag = ImGuiInputTextFlags_CallbackResize;
callback_data.Flags = flags;
callback_data.Buf = buf;
callback_data.BufTextLen = apply_new_text_length;
callback_data.BufSize = ImMax(buf_size, apply_new_text_length + 1);
callback_data.UserData = callback_user_data;
callback(&callback_data);
buf = callback_data.Buf;
buf_size = callback_data.BufSize;
apply_new_text_length = ImMin(callback_data.BufTextLen, buf_size - 1);
IM_ASSERT(apply_new_text_length <= buf_size);
}
//IMGUI_DEBUG_LOG("InputText(\"%s\"): apply_new_text length %d\n", label, apply_new_text_length);
// If the underlying buffer resize was denied or not carried to the next frame, apply_new_text_length+1 may be >= buf_size.
ImStrncpy(buf, apply_new_text, ImMin(apply_new_text_length + 1, buf_size));
value_changed = true;
}
// Release active ID at the end of the function (so e.g. pressing Return still does a final application of the value)