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1 | /*************************************************************************** |
2 | * Copyright (C) 2006 by Massimiliano Torromeo * |
3 | * massimiliano.torromeo@gmail.com * |
4 | * * |
5 | * This program is free software; you can redistribute it and/or modify * |
6 | * it under the terms of the GNU General Public License as published by * |
7 | * the Free Software Foundation; either version 2 of the License, or * |
8 | * (at your option) any later version. * |
9 | * * |
10 | * This program is distributed in the hope that it will be useful, * |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of * |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
13 | * GNU General Public License for more details. * |
14 | * * |
15 | * You should have received a copy of the GNU General Public License * |
16 | * along with this program; if not, write to the * |
17 | * Free Software Foundation, Inc., * |
18 | * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * |
19 | ***************************************************************************/ |
20 | |
21 | #include "textdialog.h" |
22 | |
23 | #include "gmenu2x.h" |
24 | #include "utilities.h" |
25 | |
26 | using namespace std; |
27 | |
28 | TextDialog::TextDialog(GMenu2X *gmenu2x, const string &title, const string &description, const string &icon, vector<string> *text) |
29 | : Dialog(gmenu2x) |
30 | { |
31 | this->text = text; |
32 | this->title = title; |
33 | this->description = description; |
34 | this->icon = icon; |
35 | preProcess(); |
36 | } |
37 | |
38 | void TextDialog::preProcess() { |
39 | unsigned i = 0; |
40 | string row; |
41 | |
42 | while (i<text->size()) { |
43 | //clean this row |
44 | row = trim(text->at(i)); |
45 | |
46 | //check if this row is not too long |
47 | if (gmenu2x->font->getTextWidth(row)>(int)gmenu2x->resX-15) { |
48 | vector<string> words; |
49 | split(words, row, " "); |
50 | |
51 | unsigned numWords = words.size(); |
52 | //find the maximum number of rows that can be printed on screen |
53 | while (gmenu2x->font->getTextWidth(row)>(int)gmenu2x->resX-15 && numWords>0) { |
54 | numWords--; |
55 | row = ""; |
56 | for (unsigned x=0; x<numWords; x++) |
57 | row += words[x] + " "; |
58 | row = trim(row); |
59 | } |
60 | |
61 | //if numWords==0 then the string must be printed as-is, it cannot be split |
62 | if (numWords>0) { |
63 | //replace with the shorter version |
64 | text->at(i) = row; |
65 | |
66 | //build the remaining text in another row |
67 | row = ""; |
68 | for (unsigned x=numWords; x<words.size(); x++) |
69 | row += words[x] + " "; |
70 | row = trim(row); |
71 | |
72 | if (!row.empty()) |
73 | text->insert(text->begin()+i+1, row); |
74 | } |
75 | } |
76 | i++; |
77 | } |
78 | } |
79 | |
80 | void TextDialog::drawText(vector<string> *text, unsigned int y, |
81 | unsigned int firstRow, unsigned int rowsPerPage) |
82 | { |
83 | const int fontHeight = gmenu2x->font->getHeight(); |
84 | |
85 | for (unsigned i = firstRow; i < firstRow + rowsPerPage && i < text->size(); i++) { |
86 | const string &line = text->at(i); |
87 | int rowY = y + (i - firstRow) * fontHeight; |
88 | if (line == "----") { // horizontal ruler |
89 | rowY += fontHeight / 2; |
90 | gmenu2x->s->hline(5, rowY, gmenu2x->resX - 16, 255, 255, 255, 130); |
91 | gmenu2x->s->hline(5, rowY+1, gmenu2x->resX - 16, 0, 0, 0, 130); |
92 | } else { |
93 | gmenu2x->font->write(gmenu2x->s, line, 5, rowY); |
94 | } |
95 | } |
96 | |
97 | gmenu2x->drawScrollBar(rowsPerPage, text->size(), firstRow); |
98 | } |
99 | |
100 | void TextDialog::exec() { |
101 | bool close = false; |
102 | |
103 | Surface bg(gmenu2x->bg); |
104 | |
105 | //link icon |
106 | if (!fileExists(icon)) |
107 | drawTitleIcon("icons/ebook.png",true,&bg); |
108 | else |
109 | drawTitleIcon(icon,false,&bg); |
110 | writeTitle(title,&bg); |
111 | writeSubTitle(description,&bg); |
112 | |
113 | gmenu2x->drawButton(&bg, "start", gmenu2x->tr["Exit"], |
114 | gmenu2x->drawButton(&bg, "cancel", "", |
115 | gmenu2x->drawButton(&bg, "down", gmenu2x->tr["Scroll"], |
116 | gmenu2x->drawButton(&bg, "up", "", 5)-10))-10); |
117 | |
118 | bg.convertToDisplayFormat(); |
119 | |
120 | const int fontHeight = gmenu2x->font->getHeight(); |
121 | unsigned int contentY, contentHeight; |
122 | tie(contentY, contentHeight) = gmenu2x->getContentArea(); |
123 | const unsigned rowsPerPage = contentHeight / fontHeight; |
124 | contentY += (contentHeight % fontHeight) / 2; |
125 | |
126 | unsigned firstRow = 0; |
127 | while (!close) { |
128 | bg.blit(gmenu2x->s, 0, 0); |
129 | drawText(text, contentY, firstRow, rowsPerPage); |
130 | gmenu2x->s->flip(); |
131 | |
132 | switch(gmenu2x->input.waitForPressedButton()) { |
133 | case InputManager::UP: |
134 | if (firstRow > 0) firstRow--; |
135 | break; |
136 | case InputManager::DOWN: |
137 | if (firstRow + rowsPerPage < text->size()) firstRow++; |
138 | break; |
139 | case InputManager::ALTLEFT: |
140 | if (firstRow >= rowsPerPage-1) firstRow -= rowsPerPage-1; |
141 | else firstRow = 0; |
142 | break; |
143 | case InputManager::ALTRIGHT: |
144 | if (firstRow + rowsPerPage*2 -1 < text->size()) { |
145 | firstRow += rowsPerPage-1; |
146 | } else { |
147 | firstRow = max(0ul, (unsigned long) (text->size() - rowsPerPage)); |
148 | } |
149 | break; |
150 | case InputManager::SETTINGS: |
151 | case InputManager::CANCEL: |
152 | close = true; |
153 | break; |
154 | default: |
155 | break; |
156 | } |
157 | } |
158 | } |
159 |
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