(svn r12425) -Feature [FS#1846]: On Screen Keyboard for input fields so someone without a keyboard can enter text too. Patch by Dominik.
rubidium
16 years ago
parent
06c0e5df5a
commit
327e870962
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/* $Id$ */
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/** @file osk_gui.cpp The On Screen Keyboard GUI */
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#include "stdafx.h"
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#include "openttd.h"
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#include "textbuf_gui.h"
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#include "window_gui.h"
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#include "string_func.h"
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#include "strings_func.h"
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#include "debug.h"
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#include "window_func.h"
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#include "gfx_func.h"
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#include "table/sprites.h"
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#include "table/strings.h"
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struct osk_d {
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querystr_d *qs; // text-input
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int text_btn; // widget number of parent's text field
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int ok_btn; // widget number of parent's ok button (=0 when ok shouldn't be passed on)
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int cancel_btn; // widget number of parent's cancel button (=0 when cancel shouldn't be passed on; text will be reverted to original)
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Textbuf *text; // pointer to parent's textbuffer (to update caret position)
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char *orig; // the original text, in case we cancel
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};
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assert_compile(WINDOW_CUSTOM_SIZE >= sizeof(osk_d));
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enum OskWidgets {
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OSK_WIDGET_TEXT = 3,
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OSK_WIDGET_CANCEL = 5,
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OSK_WIDGET_OK,
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OSK_WIDGET_BACKSPACE,
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OSK_WIDGET_SPECIAL,
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OSK_WIDGET_CAPS,
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OSK_WIDGET_SHIFT,
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OSK_WIDGET_SPACE,
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OSK_WIDGET_LEFT,
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OSK_WIDGET_RIGHT,
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OSK_WIDGET_LETTERS
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};
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char _keyboard_opt[2][OSK_KEYBOARD_ENTRIES * 4 + 1];
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static WChar _keyboard[2][OSK_KEYBOARD_ENTRIES];
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enum {
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KEYS_NONE,
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KEYS_SHIFT,
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KEYS_CAPS
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};
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static byte _keystate = KEYS_NONE;
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/*
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* Only show valid characters; do not show characters that would
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* only insert a space when we have a spacebar to do that or
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* characters that are not allowed to be entered.
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*/
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static void ChangeOskDiabledState(Window *w, const querystr_d *qs, bool shift)
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{
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for (uint i = 0; i < OSK_KEYBOARD_ENTRIES; i++) {
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w->SetWidgetDisabledState(OSK_WIDGET_LETTERS + i,
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!IsValidChar(_keyboard[shift][i], qs->afilter) || _keyboard[shift][i] == ' ');
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}
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w->SetWidgetDisabledState(OSK_WIDGET_SPACE, !IsValidChar(' ', qs->afilter));
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}
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/* on screen keyboard */
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static void OskWndProc(Window *w, WindowEvent *e)
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{
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querystr_d *qs = WP(w, osk_d).qs;
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switch (e->event) {
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case WE_CREATE:
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SetBit(_no_scroll, SCROLL_EDIT);
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/* Not needed by default. */
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w->DisableWidget(OSK_WIDGET_SPECIAL);
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break;
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case WE_PAINT: {
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bool shift = HasBit(_keystate, KEYS_CAPS) ^ HasBit(_keystate, KEYS_SHIFT);
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w->LowerWidget(OSK_WIDGET_TEXT);
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w->SetWidgetLoweredState(OSK_WIDGET_SHIFT, HasBit(_keystate, KEYS_SHIFT));
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w->SetWidgetLoweredState(OSK_WIDGET_CAPS, HasBit(_keystate, KEYS_CAPS));
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ChangeOskDiabledState(w, qs, shift);
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SetDParam(0, qs->caption);
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DrawWindowWidgets(w);
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for (uint i = 0; i < OSK_KEYBOARD_ENTRIES; i++) {
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DrawCharCentered(_keyboard[shift][i],
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w->widget[OSK_WIDGET_LETTERS + i].left + 8,
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w->widget[OSK_WIDGET_LETTERS + i].top + 3,
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TC_BLACK);
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}
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DrawEditBox(w, qs, OSK_WIDGET_TEXT);
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break;
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}
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case WE_CLICK:
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/* clicked a letter */
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if (e->we.click.widget >= OSK_WIDGET_LETTERS) {
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bool shift = HasBit(_keystate, KEYS_CAPS) ^ HasBit(_keystate, KEYS_SHIFT);
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WChar c = _keyboard[shift][e->we.click.widget - OSK_WIDGET_LETTERS];
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if (!IsValidChar(c, qs->afilter)) break;
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if (InsertTextBufferChar(&qs->text, c)) w->InvalidateWidget(OSK_WIDGET_TEXT);
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if (HasBit(_keystate, KEYS_SHIFT)) {
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ToggleBit(_keystate, KEYS_SHIFT);
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w->widget[OSK_WIDGET_SHIFT].color = HasBit(_keystate, KEYS_SHIFT) ? 15 : 14;
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SetWindowDirty(w);
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}
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break;
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}
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switch (e->we.click.widget) {
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case OSK_WIDGET_BACKSPACE:
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if (DeleteTextBufferChar(&qs->text, WKC_BACKSPACE)) w->InvalidateWidget(OSK_WIDGET_TEXT);
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break;
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case OSK_WIDGET_SPECIAL:
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/*
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* Anything device specific can go here.
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* The button itself is hidden by default, and when you need it you
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* can not hide it in the create event.
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*/
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break;
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case OSK_WIDGET_CAPS:
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ToggleBit(_keystate, KEYS_CAPS);
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SetWindowDirty(w);
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break;
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case OSK_WIDGET_SHIFT:
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ToggleBit(_keystate, KEYS_SHIFT);
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SetWindowDirty(w);
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break;
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case OSK_WIDGET_SPACE:
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if (InsertTextBufferChar(&qs->text, ' ')) w->InvalidateWidget(OSK_WIDGET_TEXT);
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break;
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case OSK_WIDGET_LEFT:
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if (MoveTextBufferPos(&qs->text, WKC_LEFT)) w->InvalidateWidget(OSK_WIDGET_TEXT);
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break;
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case OSK_WIDGET_RIGHT:
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if (MoveTextBufferPos(&qs->text, WKC_RIGHT)) w->InvalidateWidget(OSK_WIDGET_TEXT);
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break;
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case OSK_WIDGET_OK:
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if (qs->orig == NULL || strcmp(qs->text.buf, qs->orig) != 0) {
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/* pass information by simulating a button press on parent window */
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if (WP(w, osk_d).ok_btn != 0) {
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Window *parent = w->parent;
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WindowEvent e;
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e.event = WE_CLICK;
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e.we.click.widget = WP(w, osk_d).ok_btn;
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parent->wndproc(parent, &e);
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}
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}
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DeleteWindow(w);
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break;
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case OSK_WIDGET_CANCEL:
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if (WP(w, osk_d).cancel_btn != 0) { // pass a cancel event to the parent window
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Window *parent = w->parent;
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WindowEvent e;
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e.event = WE_CLICK;
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e.we.click.widget = WP(w, osk_d).cancel_btn;
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parent->wndproc(parent, &e);
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} else { // or reset to original string
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strcpy(qs->text.buf, WP(w, osk_d).orig);
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UpdateTextBufferSize(&qs->text);
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MoveTextBufferPos(&qs->text, WKC_END);
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}
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DeleteWindow(w);
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break;
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}
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/* make sure that the parent window's textbox also gets updated */
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if (w->parent != NULL) w->parent->InvalidateWidget(WP(w, osk_d).text_btn);
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break;
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case WE_MOUSELOOP:
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HandleEditBox(w, qs, OSK_WIDGET_TEXT);
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/* make the caret of the parent window also blink */
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w->parent->InvalidateWidget(WP(w, osk_d).text_btn);
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break;
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}
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}
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static const Widget _osk_widgets[] = {
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{ WWT_EMPTY, RESIZE_NONE, 0, 0, 0, 0, 0, 0x0, STR_NULL},
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{ WWT_CAPTION, RESIZE_NONE, 14, 0, 255, 0, 13, STR_012D, STR_NULL},
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{ WWT_PANEL, RESIZE_NONE, 14, 0, 255, 14, 29, 0x0, STR_NULL},
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{ WWT_EDITBOX, RESIZE_NONE, 14, 2, 253, 16, 27, 0x0, STR_NULL},
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{ WWT_PANEL, RESIZE_NONE, 14, 0, 255, 30, 139, 0x0, STR_NULL},
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{ WWT_TEXTBTN, RESIZE_NONE, 14, 3, 108, 35, 46, STR_012E_CANCEL, STR_NULL},
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{ WWT_TEXTBTN, RESIZE_NONE, 14, 111, 216, 35, 46, STR_012F_OK, STR_NULL},
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{ WWT_PUSHIMGBTN, RESIZE_NONE, 14, 219, 252, 35, 46, SPR_OSK_BACKSPACE, STR_NULL},
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{ WWT_PUSHIMGBTN, RESIZE_NONE, 14, 3, 27, 67, 82, SPR_OSK_SPECIAL, STR_NULL},
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{ WWT_IMGBTN, RESIZE_NONE, 14, 3, 36, 85, 100, SPR_OSK_CAPS, STR_NULL},
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{ WWT_IMGBTN, RESIZE_NONE, 14, 3, 27, 103, 118, SPR_OSK_SHIFT, STR_NULL},
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{ WWT_PUSHTXTBTN, RESIZE_NONE, 14, 75, 189, 121, 136, STR_EMPTY, STR_NULL},
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{ WWT_PUSHIMGBTN, RESIZE_NONE, 14, 219, 234, 121, 136, SPR_OSK_LEFT, STR_NULL},
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{ WWT_PUSHIMGBTN, RESIZE_NONE, 14, 237, 252, 121, 136, SPR_OSK_RIGHT, STR_NULL},
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{ WWT_PUSHBTN, RESIZE_NONE, 14, 3, 18, 49, 64, 0x0, STR_NULL},
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{ WWT_PUSHBTN, RESIZE_NONE, 14, 21, 36, 49, 64, 0x0, STR_NULL},
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{ WWT_PUSHBTN, RESIZE_NONE, 14, 39, 54, 49, 64, 0x0, STR_NULL},
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{ WWT_PUSHBTN, RESIZE_NONE, 14, 57, 72, 49, 64, 0x0, STR_NULL},
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{ WWT_PUSHBTN, RESIZE_NONE, 14, 75, 90, 49, 64, 0x0, STR_NULL},
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{ WWT_PUSHBTN, RESIZE_NONE, 14, 93, 108, 49, 64, 0x0, STR_NULL},
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{ WWT_PUSHBTN, RESIZE_NONE, 14, 111, 126, 49, 64, 0x0, STR_NULL},
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{ WWT_PUSHBTN, RESIZE_NONE, 14, 129, 144, 49, 64, 0x0, STR_NULL},
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{ WWT_PUSHBTN, RESIZE_NONE, 14, 147, 162, 49, 64, 0x0, STR_NULL},
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{ WWT_PUSHBTN, RESIZE_NONE, 14, 165, 180, 49, 64, 0x0, STR_NULL},
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{ WWT_PUSHBTN, RESIZE_NONE, 14, 183, 198, 49, 64, 0x0, STR_NULL},
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{ WWT_PUSHBTN, RESIZE_NONE, 14, 201, 216, 49, 64, 0x0, STR_NULL},
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{ WWT_PUSHBTN, RESIZE_NONE, 14, 219, 234, 49, 64, 0x0, STR_NULL},
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{ WWT_PUSHBTN, RESIZE_NONE, 14, 237, 252, 49, 64, 0x0, STR_NULL},
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{ WWT_PUSHBTN, RESIZE_NONE, 14, 30, 45, 67, 82, 0x0, STR_NULL},
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{ WWT_PUSHBTN, RESIZE_NONE, 14, 48, 63, 67, 82, 0x0, STR_NULL},
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{ WWT_PUSHBTN, RESIZE_NONE, 14, 66, 81, 67, 82, 0x0, STR_NULL},
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{ WWT_PUSHBTN, RESIZE_NONE, 14, 84, 99, 67, 82, 0x0, STR_NULL},
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{ WWT_PUSHBTN, RESIZE_NONE, 14, 102, 117, 67, 82, 0x0, STR_NULL},
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{ WWT_PUSHBTN, RESIZE_NONE, 14, 120, 135, 67, 82, 0x0, STR_NULL},
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{ WWT_PUSHBTN, RESIZE_NONE, 14, 138, 153, 67, 82, 0x0, STR_NULL},
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{ WWT_PUSHBTN, RESIZE_NONE, 14, 156, 171, 67, 82, 0x0, STR_NULL},
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{ WWT_PUSHBTN, RESIZE_NONE, 14, 174, 189, 67, 82, 0x0, STR_NULL},
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{ WWT_PUSHBTN, RESIZE_NONE, 14, 192, 207, 67, 82, 0x0, STR_NULL},
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{ WWT_PUSHBTN, RESIZE_NONE, 14, 210, 225, 67, 82, 0x0, STR_NULL},
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{ WWT_PUSHBTN, RESIZE_NONE, 14, 228, 243, 67, 82, 0x0, STR_NULL},
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{ WWT_PUSHBTN, RESIZE_NONE, 14, 39, 54, 85, 100, 0x0, STR_NULL},
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{ WWT_PUSHBTN, RESIZE_NONE, 14, 57, 72, 85, 100, 0x0, STR_NULL},
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{ WWT_PUSHBTN, RESIZE_NONE, 14, 75, 90, 85, 100, 0x0, STR_NULL},
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{ WWT_PUSHBTN, RESIZE_NONE, 14, 93, 108, 85, 100, 0x0, STR_NULL},
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{ WWT_PUSHBTN, RESIZE_NONE, 14, 111, 126, 85, 100, 0x0, STR_NULL},
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{ WWT_PUSHBTN, RESIZE_NONE, 14, 129, 144, 85, 100, 0x0, STR_NULL},
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{ WWT_PUSHBTN, RESIZE_NONE, 14, 147, 162, 85, 100, 0x0, STR_NULL},
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{ WWT_PUSHBTN, RESIZE_NONE, 14, 165, 180, 85, 100, 0x0, STR_NULL},
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{ WWT_PUSHBTN, RESIZE_NONE, 14, 183, 198, 85, 100, 0x0, STR_NULL},
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{ WWT_PUSHBTN, RESIZE_NONE, 14, 201, 216, 85, 100, 0x0, STR_NULL},
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{ WWT_PUSHBTN, RESIZE_NONE, 14, 219, 234, 85, 100, 0x0, STR_NULL},
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{ WWT_PUSHBTN, RESIZE_NONE, 14, 237, 252, 85, 100, 0x0, STR_NULL},
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{ WWT_PUSHBTN, RESIZE_NONE, 14, 30, 45, 103, 118, 0x0, STR_NULL},
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{ WWT_PUSHBTN, RESIZE_NONE, 14, 48, 63, 103, 118, 0x0, STR_NULL},
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{ WWT_PUSHBTN, RESIZE_NONE, 14, 66, 81, 103, 118, 0x0, STR_NULL},
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{ WWT_PUSHBTN, RESIZE_NONE, 14, 84, 99, 103, 118, 0x0, STR_NULL},
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{ WWT_PUSHBTN, RESIZE_NONE, 14, 102, 117, 103, 118, 0x0, STR_NULL},
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{ WWT_PUSHBTN, RESIZE_NONE, 14, 120, 135, 103, 118, 0x0, STR_NULL},
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{ WWT_PUSHBTN, RESIZE_NONE, 14, 138, 153, 103, 118, 0x0, STR_NULL},
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{ WWT_PUSHBTN, RESIZE_NONE, 14, 156, 171, 103, 118, 0x0, STR_NULL},
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{ WWT_PUSHBTN, RESIZE_NONE, 14, 174, 189, 103, 118, 0x0, STR_NULL},
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{ WWT_PUSHBTN, RESIZE_NONE, 14, 192, 207, 103, 118, 0x0, STR_NULL},
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{ WWT_PUSHBTN, RESIZE_NONE, 14, 210, 225, 103, 118, 0x0, STR_NULL},
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{ WWT_PUSHBTN, RESIZE_NONE, 14, 228, 243, 103, 118, 0x0, STR_NULL},
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{ WIDGETS_END},
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};
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WindowDesc _osk_desc = {
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WDP_CENTER, WDP_CENTER, 256, 140, 256, 140,
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WC_OSK, WC_NONE,
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WDF_STD_TOOLTIPS | WDF_STD_BTN | WDF_DEF_WIDGET | WDF_UNCLICK_BUTTONS,
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_osk_widgets,
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OskWndProc
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};
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/**
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* Retrieve keyboard layout from language string or (if set) config file.
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* Also check for invalid characters.
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*/
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void GetKeyboardLayout()
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{
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char keyboard[2][OSK_KEYBOARD_ENTRIES * 4 + 1];
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char errormark[2][OSK_KEYBOARD_ENTRIES + 1]; // used for marking invalid chars
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bool has_error = false; // true when an invalid char is detected
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if (StrEmpty(_keyboard_opt[0])) {
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GetString(keyboard[0], STR_OSK_KEYBOARD_LAYOUT, lastof(keyboard[0]));
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} else {
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strncpy(keyboard[0], _keyboard_opt[0], lengthof(keyboard[0]));
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}
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if (StrEmpty(_keyboard_opt[1])) {
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GetString(keyboard[1], STR_OSK_KEYBOARD_LAYOUT_CAPS, lastof(keyboard[1]));
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} else {
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strncpy(keyboard[0], _keyboard_opt[0], lengthof(keyboard[1]));
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}
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for (uint j = 0; j < 2; j++) {
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const char *kbd = keyboard[j];
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for (uint i = 0; i < OSK_KEYBOARD_ENTRIES; i++) {
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_keyboard[j][i] = Utf8Consume(&kbd);
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if (IsPrintable(_keyboard[j][i])) {
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errormark[j][i] = ' ';
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} else {
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has_error = true;
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errormark[j][i] = '^';
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_keyboard[j][i] = ' ';
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}
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}
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}
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if (has_error) {
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ShowInfoF("The keyboard layout you selected contains invalid chars. Please check those chars marked with ^.");
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ShowInfoF("Normal keyboard: %s", keyboard[0]);
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ShowInfoF(" %s", errormark[0]);
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ShowInfoF("Caps Lock: %s", keyboard[1]);
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ShowInfoF(" %s", errormark[1]);
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}
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}
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/**
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* Show the osk associated with a given textbox
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* @param parent pointer to the Window where this keyboard originated from
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* @param q querystr_d pointer to the query string of the parent, which is
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* shared for both windows
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* @param button widget number of parent's textbox
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* @param cancel widget number of parent's cancel button (0 if cancel events
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* should not be passed)
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* @param ok widget number of parent's ok button (0 if ok events should not
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* be passed)
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*/
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void ShowOnScreenKeyboard(Window *parent, querystr_d *q, int button, int cancel, int ok)
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{
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DeleteWindowById(WC_OSK, 0);
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Window *w = AllocateWindowDesc(&_osk_desc);
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w->parent = parent;
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assert(parent != NULL);
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if (parent->widget[button].data != 0) q->caption = parent->widget[button].data;
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WP(w, osk_d).qs = q;
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WP(w, osk_d).text_btn = button;
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WP(w, osk_d).cancel_btn = cancel;
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WP(w, osk_d).ok_btn = ok;
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WP(w, osk_d).text = &q->text;
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GetKeyboardLayout();
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/* make a copy in case we need to reset later */
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strcpy(_orig_str_buf, WP(w, osk_d).qs->text.buf);
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WP(w, osk_d).orig = _orig_str_buf;
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}
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