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InputText: Added support for Page Up/Down in InputTextMultiline. (#3430)

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+ fix stb_textedit.h to build with C language (amend fbf70070)
This commit is contained in:
Louis Schnellbach
2020-09-17 11:39:54 +02:00
committed by ocornut
parent 8eca736a7a
commit ec945f44b5
3 changed files with 63 additions and 29 deletions
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14
imgui_widgets.cpp
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@ -3590,6 +3590,8 @@ static bool STB_TEXTEDIT_INSERTCHARS(STB_TEXTEDIT_STRING* obj, int pos, const Im
#define STB_TEXTEDIT_K_REDO 0x20000B // keyboard input to perform redo
#define STB_TEXTEDIT_K_WORDLEFT 0x20000C // keyboard input to move cursor left one word
#define STB_TEXTEDIT_K_WORDRIGHT 0x20000D // keyboard input to move cursor right one word
#define STB_TEXTEDIT_K_PGUP 0x20000E // keyboard input to move cursor up a page
#define STB_TEXTEDIT_K_PGDOWN 0x20000F // keyboard input to move cursor down a page
#define STB_TEXTEDIT_K_SHIFT 0x400000
#define STB_TEXTEDIT_IMPLEMENTATION
@ -3856,6 +3858,8 @@ bool ImGui::InputTextEx(const char* label, const char* hint, char* buf, int buf_
bool clear_active_id = false;
bool select_all = (g.ActiveId != id) && ((flags & ImGuiInputTextFlags_AutoSelectAll) != 0 || user_nav_input_start) && (!is_multiline);
float scroll_y = is_multiline ? draw_window->Scroll.y : FLT_MAX;
const bool init_make_active = (focus_requested || user_clicked || user_scroll_finish || user_nav_input_start);
const bool init_state = (init_make_active || user_scroll_active);
if (init_state && g.ActiveId != id)
@ -3916,7 +3920,7 @@ bool ImGui::InputTextEx(const char* label, const char* hint, char* buf, int buf_
g.ActiveIdUsingNavInputMask |= (1 << ImGuiNavInput_Cancel);
g.ActiveIdUsingKeyInputMask |= ((ImU64)1 << ImGuiKey_Home) | ((ImU64)1 << ImGuiKey_End);
if (is_multiline)
g.ActiveIdUsingKeyInputMask |= ((ImU64)1 << ImGuiKey_PageUp) | ((ImU64)1 << ImGuiKey_PageDown); // FIXME-NAV: Page up/down actually not supported yet by widget, but claim them ahead.
g.ActiveIdUsingKeyInputMask |= ((ImU64)1 << ImGuiKey_PageUp) | ((ImU64)1 << ImGuiKey_PageDown);
if (flags & (ImGuiInputTextFlags_CallbackCompletion | ImGuiInputTextFlags_AllowTabInput)) // Disable keyboard tabbing out as we will use the \t character.
g.ActiveIdUsingKeyInputMask |= ((ImU64)1 << ImGuiKey_Tab);
}
@ -4055,6 +4059,9 @@ bool ImGui::InputTextEx(const char* label, const char* hint, char* buf, int buf_
IM_ASSERT(state != NULL);
IM_ASSERT(io.KeyMods == GetMergedKeyModFlags() && "Mismatching io.KeyCtrl/io.KeyShift/io.KeyAlt/io.KeySuper vs io.KeyMods"); // We rarely do this check, but if anything let's do it here.
const int row_count_per_page = ImMax((int)((inner_size.y - style.FramePadding.y) / g.FontSize), 1);
state->Stb.row_count_per_page = row_count_per_page;
const int k_mask = (io.KeyShift ? STB_TEXTEDIT_K_SHIFT : 0);
const bool is_osx = io.ConfigMacOSXBehaviors;
const bool is_osx_shift_shortcut = is_osx && (io.KeyMods == (ImGuiKeyModFlags_Super | ImGuiKeyModFlags_Shift));
@ -4074,6 +4081,8 @@ bool ImGui::InputTextEx(const char* label, const char* hint, char* buf, int buf_
else if (IsKeyPressedMap(ImGuiKey_RightArrow)) { state->OnKeyPressed((is_startend_key_down ? STB_TEXTEDIT_K_LINEEND : is_wordmove_key_down ? STB_TEXTEDIT_K_WORDRIGHT : STB_TEXTEDIT_K_RIGHT) | k_mask); }
else if (IsKeyPressedMap(ImGuiKey_UpArrow) && is_multiline) { if (io.KeyCtrl) SetScrollY(draw_window, ImMax(draw_window->Scroll.y - g.FontSize, 0.0f)); else state->OnKeyPressed((is_startend_key_down ? STB_TEXTEDIT_K_TEXTSTART : STB_TEXTEDIT_K_UP) | k_mask); }
else if (IsKeyPressedMap(ImGuiKey_DownArrow) && is_multiline) { if (io.KeyCtrl) SetScrollY(draw_window, ImMin(draw_window->Scroll.y + g.FontSize, GetScrollMaxY())); else state->OnKeyPressed((is_startend_key_down ? STB_TEXTEDIT_K_TEXTEND : STB_TEXTEDIT_K_DOWN) | k_mask); }
else if (IsKeyPressedMap(ImGuiKey_PageUp) && is_multiline) { state->OnKeyPressed(STB_TEXTEDIT_K_PGUP | k_mask); scroll_y -= row_count_per_page * g.FontSize; }
else if (IsKeyPressedMap(ImGuiKey_PageDown) && is_multiline) { state->OnKeyPressed(STB_TEXTEDIT_K_PGDOWN | k_mask); scroll_y += row_count_per_page * g.FontSize; }
else if (IsKeyPressedMap(ImGuiKey_Home)) { state->OnKeyPressed(io.KeyCtrl ? STB_TEXTEDIT_K_TEXTSTART | k_mask : STB_TEXTEDIT_K_LINESTART | k_mask); }
else if (IsKeyPressedMap(ImGuiKey_End)) { state->OnKeyPressed(io.KeyCtrl ? STB_TEXTEDIT_K_TEXTEND | k_mask : STB_TEXTEDIT_K_LINEEND | k_mask); }
else if (IsKeyPressedMap(ImGuiKey_Delete) && !is_readonly) { state->OnKeyPressed(STB_TEXTEDIT_K_DELETE | k_mask); }
@ -4443,12 +4452,11 @@ bool ImGui::InputTextEx(const char* label, const char* hint, char* buf, int buf_
if (is_multiline)
{
// Test if cursor is vertically visible
float scroll_y = draw_window->Scroll.y;
const float scroll_max_y = ImMax((text_size.y + style.FramePadding.y * 2.0f) - inner_size.y, 0.0f);
if (cursor_offset.y - g.FontSize < scroll_y)
scroll_y = ImMax(0.0f, cursor_offset.y - g.FontSize);
else if (cursor_offset.y - inner_size.y >= scroll_y)
scroll_y = cursor_offset.y - inner_size.y + style.FramePadding.y * 2.0f;
const float scroll_max_y = ImMax((text_size.y + style.FramePadding.y * 2.0f) - inner_size.y, 0.0f);
scroll_y = ImClamp(scroll_y, 0.0f, scroll_max_y);
draw_pos.y += (draw_window->Scroll.y - scroll_y); // Manipulate cursor pos immediately avoid a frame of lag
draw_window->Scroll.y = scroll_y;