/*
Advanced keyboard view interface
Copyright 2013 Thincast Technologies GmbH, Author: Martin Fleisz
This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0.
If a copy of the MPL was not distributed with this file, You can obtain one at
http://mozilla.org/MPL/2.0/.
*/
#import "AdvancedKeyboardView.h"
#include <freerdp/locale/keyboard.h>
// helper struct to define button layouts/settings
struct ButtonItem
{
NSString *title;
int tag;
};
@interface AdvancedKeyboardView (Private)
- (UIView *)keyboardViewForItems:(struct ButtonItem *)items columns:(int)columns rows:(int)rows;
@end
@implementation AdvancedKeyboardView
@synthesize delegate = _delegate;
// defines for the different views
#define KEY_SHOW_FUNCVIEW 0x1000
#define KEY_SHOW_CURSORVIEW 0x1001
#define KEY_SHOW_NUMPADVIEW 0x1002
#define KEY_SKIP 0x8000
#define KEY_MERGE_COLUMN 0x8001
#define KEYCODE_UNICODE 0x80000000
struct ButtonItem functionKeysItems[24] = { { @"F1", VK_F1 },
{ @"F2", VK_F2 },
{ @"F3", VK_F3 },
{ @"F4", VK_F4 },
{ @"F5", VK_F5 },
{ @"F6", VK_F6 },
{ @"F7", VK_F7 },
{ @"F8", VK_F8 },
{ @"F9", VK_F9 },
{ @"F10", VK_F10 },
{ @"F11", VK_F11 },
{ @"F12", VK_F12 },
{ @"img:icon_key_arrows", KEY_SHOW_CURSORVIEW },
{ @"Tab", VK_TAB },
{ @"Ins", VK_INSERT | KBDEXT },
{ @"Home", VK_HOME | KBDEXT },
{ @"PgUp", VK_PRIOR | KBDEXT },
{ @"img:icon_key_win", VK_LWIN | KBDEXT },
{ @"123", KEY_SHOW_NUMPADVIEW },
{ @"Print", VK_PRINT },
{ @"Del", VK_DELETE | KBDEXT },
{ @"End", VK_END | KBDEXT },
{ @"PgDn", VK_NEXT | KBDEXT },
{ @"img:icon_key_menu", VK_APPS | KBDEXT } };
struct ButtonItem numPadKeysItems[24] = { { @"(", KEYCODE_UNICODE | 40 },
{ @")", KEYCODE_UNICODE | 41 },
{ @"7", VK_NUMPAD7 },
{ @"8", VK_NUMPAD8 },
{ @"9", VK_NUMPAD9 },
{ @"-", VK_SUBTRACT },
{ @"/", VK_DIVIDE | KBDEXT },
{ @"*", VK_MULTIPLY },
{ @"4", VK_NUMPAD4 },
{ @"5", VK_NUMPAD5 },
{ @"6", VK_NUMPAD6 },
{ @"+", VK_ADD },
{ @"Fn", KEY_SHOW_FUNCVIEW },
{ @"Num", VK_NUMLOCK },
{ @"1", VK_NUMPAD1 },
{ @"2", VK_NUMPAD2 },
{ @"3", VK_NUMPAD3 },
{ @"img:icon_key_backspace", VK_BACK },
{ @"img:icon_key_arrows", KEY_SHOW_CURSORVIEW },
{ @"=", KEYCODE_UNICODE | 61 },
{ @"", KEY_MERGE_COLUMN },
{ @"0", VK_NUMPAD0 },
{ @".", VK_DECIMAL },
{ @"img:icon_key_return", VK_RETURN | KBDEXT } };
struct ButtonItem cursorKeysItems[24] = { { @"", KEY_SKIP },
{ @"", KEY_SKIP },
{ @"", KEY_SKIP },
{ @"", KEY_SKIP },
{ @"", KEY_SKIP },
{ @"", KEY_SKIP },
{ @"", KEY_SKIP },
{ @"", KEY_SKIP },
{ @"", KEY_SKIP },
{ @"img:icon_key_arrow_up", VK_UP | KBDEXT },
{ @"", KEY_SKIP },
{ @"", KEY_SKIP },
{ @"Fn", KEY_SHOW_FUNCVIEW },
{ @"", KEY_SKIP },
{ @"img:icon_key_arrow_left", VK_LEFT | KBDEXT },
{ @"", KEY_SKIP },
{ @"img:icon_key_arrow_right", VK_RIGHT | KBDEXT },
{ @"img:icon_key_backspace", VK_BACK },
{ @"123", KEY_SHOW_NUMPADVIEW },
{ @"", KEY_SKIP },
{ @"", KEY_SKIP },
{ @"img:icon_key_arrow_down", VK_DOWN | KBDEXT },
{ @"", KEY_SKIP },
{ @"img:icon_key_return", VK_RETURN | KBDEXT } };
- (void)initFunctionKeysView
{
_function_keys_view = [[self keyboardViewForItems:functionKeysItems columns:6 rows:4] retain];
[self addSubview:_function_keys_view];
}
- (void)initNumPadKeysView
{
_numpad_keys_view = [[self keyboardViewForItems:numPadKeysItems columns:6 rows:4] retain];
[self addSubview:_numpad_keys_view];
}
- (void)initCursorKeysView
{
_cursor_keys_view = [[self keyboardViewForItems:cursorKeysItems columns:6 rows:4] retain];
[self addSubview:_cursor_keys_view];
}
- (id)initWithFrame:(CGRect)frame delegate:(NSObject<AdvancedKeyboardDelegate> *)delegate
{
self = [super initWithFrame:frame];
if (self)
{
_delegate = delegate;
self.autoresizingMask = UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleWidth;
self.backgroundColor = [UIColor blackColor];
// Initialization code
[self initCursorKeysView];
[self initNumPadKeysView];
[self initFunctionKeysView];
// set function keys view to the initial view and hide others
_cur_view = _function_keys_view;
[_numpad_keys_view setHidden:YES];
[_cursor_keys_view setHidden:YES];
}
return self;
}
/*
// Only override drawRect: if you perform custom drawing.
// An empty implementation adversely affects performance during animation.
- (void)drawRect:(CGRect)rect
{
// Drawing code
}
*/
- (void)drawRect:(CGRect)rect
{
// draw a nice background gradient
CGContextRef currentContext = UIGraphicsGetCurrentContext();
CGGradientRef glossGradient;
CGColorSpaceRef rgbColorspace;
size_t num_locations = 2;
CGFloat locations[2] = { 0.0, 1.0 };
CGFloat components[8] = { 1.0, 1.0, 1.0, 0.35, // Start color
1.0, 1.0, 1.0, 0.06 }; // End color
rgbColorspace = CGColorSpaceCreateDeviceRGB();
glossGradient =
CGGradientCreateWithColorComponents(rgbColorspace, components, locations, num_locations);
CGRect currentBounds = self.bounds;
CGPoint topCenter = CGPointMake(CGRectGetMidX(currentBounds), 0.0f);
CGPoint midCenter = CGPointMake(CGRectGetMidX(currentBounds), currentBounds.size.height);
CGContextDrawLinearGradient(currentContext, glossGradient, topCenter, midCenter, 0);
CGGradientRelease(glossGradient);
CGColorSpaceRelease(rgbColorspace);
}
- (void)dealloc
{
[_function_keys_view autorelease];
[_numpad_keys_view autorelease];
[_cursor_keys_view autorelease];
[super dealloc];
}
#pragma mark -
#pragma mark button events
- (IBAction)keyPressed:(id)sender
{
UIButton *btn = (UIButton *)sender;
switch ([btn tag])
{
case KEY_SHOW_CURSORVIEW:
// switch to cursor view
[_cur_view setHidden:YES];
[_cursor_keys_view setHidden:NO];
_cur_view = _cursor_keys_view;
break;
case KEY_SHOW_NUMPADVIEW:
// switch to numpad view
[_cur_view setHidden:YES];
[_numpad_keys_view setHidden:NO];
_cur_view = _numpad_keys_view;
break;
case KEY_SHOW_FUNCVIEW:
// switch to function keys view
[_cur_view setHidden:YES];
[_function_keys_view setHidden:NO];
_cur_view = _function_keys_view;
break;
default:
if ([btn tag] & KEYCODE_UNICODE)
{
if ([[self delegate] respondsToSelector:@selector(advancedKeyPressedUnicode:)])
[[self delegate] advancedKeyPressedUnicode:([btn tag] & ~KEYCODE_UNICODE)];
}
else
{
if ([[self delegate] respondsToSelector:@selector(advancedKeyPressedVKey:)])
[[self delegate] advancedKeyPressedVKey:[btn tag]];
}
break;
}
}
@end
#pragma mark -
@implementation AdvancedKeyboardView (Private)
- (UIView *)keyboardViewForItems:(struct ButtonItem *)items columns:(int)columns rows:(int)rows
{
UIView *result_view = [[[UIView alloc] initWithFrame:self.bounds] autorelease];
result_view.autoresizingMask =
UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleWidth;
// calculate maximum button size
int max_btn_width = result_view.bounds.size.width / ((columns * 2) + 1);
int max_btn_height = result_view.bounds.size.height / ((rows * 2) + 1);
// ensure minimum button size
CGSize btn_size = CGSizeMake(45, 30);
if (btn_size.width < max_btn_width)
btn_size.width = max_btn_width;
if (btn_size.height < max_btn_height)
btn_size.height = max_btn_height;
// calc distance width and height between buttons
int dist_width = (result_view.bounds.size.width - (columns * btn_size.width)) / (columns + 1);
int dist_height = (result_view.bounds.size.height - (rows * btn_size.height)) / (rows + 1);
UIImage *btn_background_img = [UIImage
imageWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"keyboard_button_background"
ofType:@"png"]];
for (int j = 0; j < rows; j++)
{
for (int i = 0; i < columns; i++)
{
struct ButtonItem *curItem = &items[j * columns + i];
// skip this spot?
if (curItem->tag == KEY_SKIP)
continue;
// create button, set autoresizing mask and add action handler
UIButton *btn = [UIButton buttonWithType:UIButtonTypeRoundedRect];
[btn setAutoresizingMask:(UIViewAutoresizingFlexibleLeftMargin |
UIViewAutoresizingFlexibleRightMargin |
UIViewAutoresizingFlexibleTopMargin |
UIViewAutoresizingFlexibleBottomMargin |
UIViewAutoresizingFlexibleWidth |
UIViewAutoresizingFlexibleHeight)];
[btn addTarget:self
action:@selector(keyPressed:)
forControlEvents:UIControlEventTouchUpInside];
// if merge is specified we merge this button's position with the next one
if (curItem->tag == KEY_MERGE_COLUMN)
{
// calc merged frame
[btn setFrame:CGRectMake(dist_width + (i * dist_width) + (i * btn_size.width),
dist_height + (j * dist_height) + (j * btn_size.height),
btn_size.width * 2 + dist_width, btn_size.height)];
// proceed to the next column item
i++;
curItem = &items[j * columns + i];
}
else
{
[btn setFrame:CGRectMake(dist_width + (i * dist_width) + (i * btn_size.width),
dist_height + (j * dist_height) + (j * btn_size.height),
btn_size.width, btn_size.height)];
}
// set button text or image parameters
if ([curItem->title hasPrefix:@"img:"] == YES)
{
UIImage *btn_image =
[UIImage imageWithContentsOfFile:[[NSBundle mainBundle]
pathForResource:[curItem->title
substringFromIndex:4]
ofType:@"png"]];
[btn setImage:btn_image forState:UIControlStateNormal];
}
else
{
[btn setTitle:curItem->title forState:UIControlStateNormal];
[btn setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
}
[btn setBackgroundImage:btn_background_img forState:UIControlStateNormal];
[btn setTag:curItem->tag];
// add button to view
[result_view addSubview:btn];
}
}
return result_view;
}
@end