// WindowState.cc // Copyright (c) 2008 Fluxbox Team (fluxgen at fluxbox dot org) // // Permission is hereby granted, free of charge, to any person obtaining a // copy of this software and associated documentation files (the "Software"), // to deal in the Software without restriction, including without limitation // the rights to use, copy, modify, merge, publish, distribute, sublicense, // and/or sell copies of the Software, and to permit persons to whom the // Software is furnished to do so, subject to the following conditions: // // The above copyright notice and this permission notice shall be included in // all copies or substantial portions of the Software. // // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL // THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER // DEALINGS IN THE SOFTWARE. #include "WindowState.hh" #include "FbTk/StringUtil.hh" #include bool WindowState::useBorder() const { return !fullscreen && maximized != MAX_FULL && deco_mask & DECORM_BORDER; } bool WindowState::useHandle() const { return !fullscreen && !shaded && deco_mask & DECORM_HANDLE && size_hints.isResizable(); } bool WindowState::useTabs() const { return !fullscreen && deco_mask & DECORM_TAB; } bool WindowState::useTitlebar() const { return !fullscreen && deco_mask & DECORM_TITLEBAR; } void WindowState::saveGeometry(int new_x, int new_y, unsigned int new_w, unsigned int new_h) { if (fullscreen || maximized == MAX_FULL) return; if (!(maximized & MAX_HORZ)) { x = new_x; width = new_w; } if (!(maximized & MAX_VERT)) { y = new_y; if (!shaded) height = new_h; } } int WindowState::getDecoMaskFromString(const std::string &str_label) { std::string label = FbTk::StringUtil::toLower(str_label); if (label == "none") return DECOR_NONE; if (label == "normal") return DECOR_NORMAL; if (label == "tiny") return DECOR_TINY; if (label == "tool") return DECOR_TOOL; if (label == "border") return DECOR_BORDER; if (label == "tab") return DECOR_TAB; int mask = -1; if ((str_label.size() > 1 && str_label[0] == '0' && str_label[1] == 'x') || (str_label.size() > 0 && isdigit(str_label[0]))) mask = strtol(str_label.c_str(), NULL, 0); return mask; } bool SizeHints::isResizable() const { return max_width == 0 || max_height == 0 || max_width > min_width || max_height > min_height; } void SizeHints::reset(const XSizeHints &sizehint) { if (sizehint.flags & PMinSize) { min_width = sizehint.min_width; min_height = sizehint.min_height; } else min_width = min_height = 1; if (sizehint.flags & PBaseSize) { base_width = sizehint.base_width; base_height = sizehint.base_height; if (!(sizehint.flags & PMinSize)) { min_width = base_width; min_height = base_height; } } else base_width = base_height = 0; if (sizehint.flags & PMaxSize) { max_width = sizehint.max_width; max_height = sizehint.max_height; } else max_width = max_height = 0; // unbounded if (sizehint.flags & PResizeInc) { width_inc = sizehint.width_inc; height_inc = sizehint.height_inc; } else width_inc = height_inc = 1; if (sizehint.flags & PAspect) { min_aspect_x = sizehint.min_aspect.x; min_aspect_y = sizehint.min_aspect.y; max_aspect_x = sizehint.max_aspect.x; max_aspect_y = sizehint.max_aspect.y; } else { min_aspect_x = max_aspect_y = 0; min_aspect_y = max_aspect_x = 1; } if (sizehint.flags & PWinGravity) win_gravity = sizehint.win_gravity; else win_gravity = NorthWestGravity; // some sanity checks if (width_inc == 0) width_inc = 1; if (height_inc == 0) height_inc = 1; if (base_width > min_width) min_width = base_width; if (base_height > min_height) min_height = base_height; } void closestPointToAspect(unsigned int &ret_x, unsigned int &ret_y, unsigned int point_x, unsigned int point_y, unsigned int aspect_x, unsigned int aspect_y) { double u = static_cast(point_x * aspect_x + point_y * aspect_y) / static_cast(aspect_x * aspect_x + aspect_y * aspect_y); ret_x = static_cast(u * aspect_x); ret_y = static_cast(u * aspect_y); } unsigned int increaseToMultiple(unsigned int val, unsigned int inc) { return val % inc ? val + inc - (val % inc) : val; } unsigned int decreaseToMultiple(unsigned int val, unsigned int inc) { return val % inc ? val - (val % inc) : val; } /** * Changes width and height to the nearest (lower) value * that conforms to it's size hints. * * display_* give the values that would be displayed * to the user when resizing. * We use pointers for display_* since they are optional. * * See ICCCM section 4.1.2.3 */ void SizeHints::apply(unsigned int &width, unsigned int &height, bool make_fit) const { /* aspect ratios are applied exclusive to the base size * * min_aspect_x width max_aspect_x * ------------ < ------- < ------------ * min_aspect_y height max_aspect_y * * The trick is how to get back to the aspect ratio with minimal * change - do we modify x, y or both? * A: we minimise the distance between the current point, and * the target aspect ratio (consider them as x,y coordinates) * Consider that the aspect ratio is a line, and the current * w/h is a point, so we're just using the formula for * shortest distance from a point to a line! */ // make respective to base_size unsigned int w = width - base_width, h = height - base_height; if (min_aspect_y > 0 && w * min_aspect_y < min_aspect_x * h) { closestPointToAspect(w, h, w, h, min_aspect_x, min_aspect_y); // new w must be > old w, new h must be < old h w = increaseToMultiple(w, width_inc); h = decreaseToMultiple(h, height_inc); } else if (max_aspect_x > 0 && w * max_aspect_y > max_aspect_x * h) { closestPointToAspect(w, h, w, h, max_aspect_x, max_aspect_y); // new w must be < old w, new h must be > old h w = decreaseToMultiple(w, width_inc); h = increaseToMultiple(h, height_inc); } // Check minimum size if (w + base_width < min_width) { w = increaseToMultiple(min_width - base_width, width_inc); // need to check maximum aspect again if (max_aspect_x > 0 && w * max_aspect_y > max_aspect_x * h) h = increaseToMultiple(w * max_aspect_y / max_aspect_x, height_inc); } if (h + base_height < min_height) { h = increaseToMultiple(min_height - base_height, height_inc); // need to check minimum aspect again if (min_aspect_y > 0 && w * min_aspect_y < min_aspect_x * h) w = increaseToMultiple(h * min_aspect_x / min_aspect_y, width_inc); } unsigned int max_w = make_fit && (width < max_width || max_width == 0) ? width : max_width; unsigned int max_h = make_fit && (height < max_height || max_height == 0) ? height : max_height; // Check maximum size if (max_w > 0 && w + base_width > max_w) w = max_w - base_width; if (max_h > 0 && h + base_height > max_h) h = max_h - base_height; w = decreaseToMultiple(w, width_inc); h = decreaseToMultiple(h, height_inc); // need to check aspects one more time if (min_aspect_y > 0 && w * min_aspect_y < min_aspect_x * h) h = decreaseToMultiple(w * min_aspect_y / min_aspect_x, height_inc); if (max_aspect_x > 0 && w * max_aspect_y > max_aspect_x * h) w = decreaseToMultiple(h * max_aspect_x / max_aspect_y, width_inc); width = w + base_width; height = h + base_height; } // check if the given width and height satisfy the size hints bool SizeHints::valid(unsigned int w, unsigned int h) const { if (w < min_width || h < min_height) return false; if (w > max_width || h > max_height) return false; if ((w - base_width) % width_inc != 0) return false; if ((h - base_height) % height_inc != 0) return false; if (min_aspect_x * (h - base_height) > (w - base_width) * min_aspect_y) return false; if (max_aspect_x * (h - base_height) < (w - base_width) * max_aspect_y) return false; return true; } void SizeHints::displaySize(unsigned int &i, unsigned int &j, unsigned int width, unsigned int height) const { i = (width - base_width) / width_inc; j = (height - base_height) / height_inc; }