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InputText: Add ImGuiInputTextFlags_CallbackEdit, selection helpers in ImGuiInputTextCallbackData(). Add simple InputText() callbacks demo.

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This commit is contained in:
ocornut
2020-08-20 11:25:39 +02:00
parent 024993adf9
commit fc9ccad6b9
5 changed files with 82 additions and 4 deletions
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61
imgui_demo.cpp
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@ -1177,8 +1177,11 @@ static void ShowDemoWindowWidgets()
static char buf4[64] = ""; ImGui::InputText("uppercase", buf4, 64, ImGuiInputTextFlags_CharsUppercase);
static char buf5[64] = ""; ImGui::InputText("no blank", buf5, 64, ImGuiInputTextFlags_CharsNoBlank);
static char buf6[64] = ""; ImGui::InputText("\"imgui\" letters", buf6, 64, ImGuiInputTextFlags_CallbackCharFilter, TextFilters::FilterImGuiLetters);
ImGui::TreePop();
}
ImGui::Text("Password input");
if (ImGui::TreeNode("Password Input"))
{
static char password[64] = "password123";
ImGui::InputText("password", password, IM_ARRAYSIZE(password), ImGuiInputTextFlags_Password);
ImGui::SameLine(); HelpMarker("Display all characters as '*'.\nDisable clipboard cut and copy.\nDisable logging.\n");
@ -1187,6 +1190,62 @@ static void ShowDemoWindowWidgets()
ImGui::TreePop();
}
if (ImGui::TreeNode("Completion, History, Edit Callbacks"))
{
struct Funcs
{
static int MyCallback(ImGuiInputTextCallbackData* data)
{
if (data->EventFlag == ImGuiInputTextFlags_CallbackCompletion)
{
data->InsertChars(data->CursorPos, "..");
}
else if (data->EventFlag == ImGuiInputTextFlags_CallbackHistory)
{
if (data->EventKey == ImGuiKey_UpArrow)
{
data->DeleteChars(0, data->BufTextLen);
data->InsertChars(0, "Pressed Up!");
data->SelectAll();
}
else if (data->EventKey == ImGuiKey_DownArrow)
{
data->DeleteChars(0, data->BufTextLen);
data->InsertChars(0, "Pressed Down!");
data->SelectAll();
}
}
else if (data->EventFlag == ImGuiInputTextFlags_CallbackEdit)
{
// Toggle casing of first character
char c = data->Buf[0];
if ((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z')) data->Buf[0] ^= 32;
data->BufDirty = true;
// Increment a counter
int* p_int = (int*)data->UserData;
*p_int = *p_int + 1;
}
return 0;
}
};
static char buf1[64];
ImGui::InputText("Completion", buf1, 64, ImGuiInputTextFlags_CallbackCompletion, Funcs::MyCallback);
ImGui::SameLine(); HelpMarker("Here we append \"..\" each time Tab is pressed. See 'Examples>Console' for a more meaningful demonstration of using this callback.");
static char buf2[64];
ImGui::InputText("History", buf2, 64, ImGuiInputTextFlags_CallbackHistory, Funcs::MyCallback);
ImGui::SameLine(); HelpMarker("Here we replace and select text each time Up/Down are pressed. See 'Examples>Console' for a more meaningful demonstration of using this callback.");
static char buf3[64];
static int edit_count = 0;
ImGui::InputText("Edit", buf3, 64, ImGuiInputTextFlags_CallbackEdit, Funcs::MyCallback, (void*)&edit_count);
ImGui::SameLine(); HelpMarker("Here we toggle the casing of the first character on every edits + count edits.");
ImGui::SameLine(); ImGui::Text("(%d)", edit_count);
ImGui::TreePop();
}
if (ImGui::TreeNode("Resize Callback"))
{
// To wire InputText() with std::string or any other custom string type,