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1 | /* |
2 | * sizetip.c - resize tips for PuTTY(tel) terminal window. |
3 | */ |
4 | |
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5 | #include <stdio.h> |
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6 | #include <stdlib.h> |
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7 | #include <tchar.h> |
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8 | |
9 | #include "putty.h" |
10 | |
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11 | static ATOM tip_class = 0; |
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12 | |
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13 | static HFONT tip_font; |
14 | static COLORREF tip_bg; |
15 | static COLORREF tip_text; |
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16 | |
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17 | static LRESULT CALLBACK SizeTipWndProc(HWND hWnd, UINT nMsg, |
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18 | WPARAM wParam, LPARAM lParam) |
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19 | { |
20 | |
21 | switch (nMsg) { |
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22 | case WM_ERASEBKGND: |
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23 | return TRUE; |
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24 | |
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25 | case WM_PAINT: |
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26 | { |
27 | HBRUSH hbr; |
28 | HGDIOBJ holdbr; |
29 | RECT cr; |
30 | int wtlen; |
31 | LPTSTR wt; |
32 | HDC hdc; |
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33 | |
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34 | PAINTSTRUCT ps; |
35 | hdc = BeginPaint(hWnd, &ps); |
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36 | |
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37 | SelectObject(hdc, tip_font); |
38 | SelectObject(hdc, GetStockObject(BLACK_PEN)); |
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39 | |
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40 | hbr = CreateSolidBrush(tip_bg); |
41 | holdbr = SelectObject(hdc, hbr); |
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42 | |
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43 | GetClientRect(hWnd, &cr); |
44 | Rectangle(hdc, cr.left, cr.top, cr.right, cr.bottom); |
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45 | |
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46 | wtlen = GetWindowTextLength(hWnd); |
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47 | wt = (LPTSTR) snewn(wtlen + 1, TCHAR); |
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48 | GetWindowText(hWnd, wt, wtlen + 1); |
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49 | |
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50 | SetTextColor(hdc, tip_text); |
51 | SetBkColor(hdc, tip_bg); |
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52 | |
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53 | TextOut(hdc, cr.left + 3, cr.top + 3, wt, wtlen); |
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54 | |
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55 | sfree(wt); |
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56 | |
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57 | SelectObject(hdc, holdbr); |
58 | DeleteObject(hbr); |
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59 | |
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60 | EndPaint(hWnd, &ps); |
61 | } |
62 | return 0; |
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63 | |
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64 | case WM_NCHITTEST: |
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65 | return HTTRANSPARENT; |
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66 | |
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67 | case WM_DESTROY: |
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68 | DeleteObject(tip_font); |
69 | tip_font = NULL; |
70 | break; |
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71 | |
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72 | case WM_SETTEXT: |
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73 | { |
74 | LPCTSTR str = (LPCTSTR) lParam; |
75 | SIZE sz; |
76 | HDC hdc = CreateCompatibleDC(NULL); |
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77 | |
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78 | SelectObject(hdc, tip_font); |
79 | GetTextExtentPoint32(hdc, str, _tcslen(str), &sz); |
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80 | |
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81 | SetWindowPos(hWnd, NULL, 0, 0, sz.cx + 6, sz.cy + 6, |
82 | SWP_NOZORDER | SWP_NOMOVE | SWP_NOACTIVATE); |
83 | InvalidateRect(hWnd, NULL, FALSE); |
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84 | |
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85 | DeleteDC(hdc); |
86 | } |
87 | break; |
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88 | } |
89 | |
90 | return DefWindowProc(hWnd, nMsg, wParam, lParam); |
91 | } |
92 | |
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93 | static HWND tip_wnd = NULL; |
94 | static int tip_enabled = 0; |
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95 | |
96 | void UpdateSizeTip(HWND src, int cx, int cy) |
97 | { |
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98 | TCHAR str[32]; |
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99 | |
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100 | if (!tip_enabled) |
101 | return; |
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102 | |
103 | if (!tip_wnd) { |
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104 | NONCLIENTMETRICS nci; |
105 | |
106 | /* First make sure the window class is registered */ |
107 | |
108 | if (!tip_class) { |
109 | WNDCLASS wc; |
110 | wc.style = CS_HREDRAW | CS_VREDRAW; |
111 | wc.lpfnWndProc = SizeTipWndProc; |
112 | wc.cbClsExtra = 0; |
113 | wc.cbWndExtra = 0; |
114 | wc.hInstance = hinst; |
115 | wc.hIcon = NULL; |
116 | wc.hCursor = NULL; |
117 | wc.hbrBackground = NULL; |
118 | wc.lpszMenuName = NULL; |
119 | wc.lpszClassName = "SizeTipClass"; |
120 | |
121 | tip_class = RegisterClass(&wc); |
122 | } |
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123 | #if 0 |
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124 | /* Default values based on Windows Standard color scheme */ |
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125 | |
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126 | tip_font = GetStockObject(SYSTEM_FONT); |
127 | tip_bg = RGB(255, 255, 225); |
128 | tip_text = RGB(0, 0, 0); |
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129 | #endif |
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130 | |
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131 | /* Prepare other GDI objects and drawing info */ |
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132 | |
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133 | tip_bg = GetSysColor(COLOR_INFOBK); |
134 | tip_text = GetSysColor(COLOR_INFOTEXT); |
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135 | |
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136 | memset(&nci, 0, sizeof(NONCLIENTMETRICS)); |
137 | nci.cbSize = sizeof(NONCLIENTMETRICS); |
138 | SystemParametersInfo(SPI_GETNONCLIENTMETRICS, |
139 | sizeof(NONCLIENTMETRICS), &nci, 0); |
140 | tip_font = CreateFontIndirect(&nci.lfStatusFont); |
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141 | } |
142 | |
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143 | /* Generate the tip text */ |
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144 | |
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145 | sprintf(str, "%dx%d", cx, cy); |
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146 | |
147 | if (!tip_wnd) { |
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148 | HDC hdc; |
149 | SIZE sz; |
150 | RECT wr; |
151 | int ix, iy; |
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152 | |
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153 | /* calculate the tip's size */ |
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154 | |
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155 | hdc = CreateCompatibleDC(NULL); |
156 | GetTextExtentPoint32(hdc, str, _tcslen(str), &sz); |
157 | DeleteDC(hdc); |
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158 | |
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159 | GetWindowRect(src, &wr); |
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160 | |
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161 | ix = wr.left; |
162 | if (ix < 16) |
163 | ix = 16; |
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164 | |
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165 | iy = wr.top - sz.cy; |
166 | if (iy < 16) |
167 | iy = 16; |
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168 | |
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169 | /* Create the tip window */ |
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170 | |
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171 | tip_wnd = |
172 | CreateWindowEx(WS_EX_TOOLWINDOW | WS_EX_TOPMOST, |
173 | MAKEINTRESOURCE(tip_class), str, WS_POPUP, ix, |
174 | iy, sz.cx, sz.cy, NULL, NULL, hinst, NULL); |
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175 | |
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176 | ShowWindow(tip_wnd, SW_SHOWNOACTIVATE); |
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177 | |
178 | } else { |
179 | |
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180 | /* Tip already exists, just set the text */ |
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181 | |
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182 | SetWindowText(tip_wnd, str); |
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183 | } |
184 | } |
185 | |
186 | void EnableSizeTip(int bEnable) |
187 | { |
188 | if (tip_wnd && !bEnable) { |
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189 | DestroyWindow(tip_wnd); |
190 | tip_wnd = NULL; |
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191 | } |
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192 | |
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193 | tip_enabled = bEnable; |
194 | } |