532 lines
20 KiB
C
532 lines
20 KiB
C
/*
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* graph.c - a graph widget
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*
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* Copyright © 2007-2008 Julien Danjou <julien@danjou.info>
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* Copyright © 2007-2008 Marco Candrian <mac@calmar.ws>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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*/
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#include "widget.h"
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#include "screen.h"
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#include "common/draw.h"
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#include "common/configopts.h"
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extern AwesomeConf globalconf;
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typedef struct
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{
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/* general layout */
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char **data_title; /** data_title of the data sections */
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float *max; /** Represents a full graph */
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int width; /** Width of the widget */
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float height; /** Height of graph (0-1; 1 = height of statusbar) */
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int box_height; /** Height of the innerbox in pixels */
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int size; /** Size of lines-array (also innerbox-lenght) */
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xcolor_t bg; /** Background color */
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xcolor_t bordercolor; /** Border color */
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position_t grow; /** grow: Left or Right */
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/* markers... */
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int *index; /** Index of current (new) value */
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int *max_index; /** Index of the actual maximum value */
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float *current_max; /** Pointer to current maximum value itself */
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/* all data is stored here */
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int data_items; /** Number of data-input items */
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int **lines; /** Keeps the calculated values (line-length); */
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float **values; /** Actual values */
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/* additional data + a pointer to **lines accordingly */
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int **fillbottom; /** Data array pointer (like *lines) */
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int **fillbottom_index; /** Points to some index[i] */
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int fillbottom_total; /** Total of them */
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bool *fillbottom_vertical_grad; /** Create a vertical color gradient */
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xcolor_t *fillbottom_color; /** Color of them */
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xcolor_t **fillbottom_pcolor_center; /** Color at middle of graph */
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xcolor_t **fillbottom_pcolor_end; /** Color at end of graph */
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int **filltop; /** Data array pointer (like *lines) */
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int **filltop_index; /** Points to some index[i] */
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int filltop_total; /** Total of them */
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bool *filltop_vertical_grad; /** Create a vertical color gradient */
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xcolor_t *filltop_color; /** Color of them */
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xcolor_t **filltop_pcolor_center; /** Color at center of graph */
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xcolor_t **filltop_pcolor_end; /** Color at end of graph */
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int **drawline; /** Data array pointer (like *lines) */
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int **drawline_index; /** Points to some index[i] */
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int drawline_total; /** Total of them */
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bool *drawline_vertical_grad; /** Create a vertical color gradient */
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xcolor_t *drawline_color; /** Color of them */
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xcolor_t **drawline_pcolor_center; /** Color at middle of graph */
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xcolor_t **drawline_pcolor_end; /** Color at end of graph */
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int *draw_from; /** Preparation/tmp array for draw_graph(); */
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int *draw_to; /** Preparation/tmp array for draw_graph(); */
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} Data;
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static int
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graph_draw(widget_t *widget, draw_context_t *ctx, int offset,
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int used __attribute__ ((unused)))
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{
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int margin_top;
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int z, y, x, tmp, cur_index, test_index;
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Data *d = widget->data;
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area_t rectangle, pattern_area;
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if(!d->data_items)
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return 0;
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if(!widget->user_supplied_x)
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widget->area.x = widget_calculate_offset(widget->statusbar->width,
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d->width,
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offset,
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widget->alignment);
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if(!widget->user_supplied_y)
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widget->area.y = 0;
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/* box = the graph inside the rectangle */
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if(!(d->box_height))
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d->box_height = (int) (widget->statusbar->height * d->height + 0.5) - 2;
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margin_top = (int)((widget->statusbar->height - (d->box_height + 2)) / 2 + 0.5) + widget->area.y;
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/* draw background */
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rectangle.x = widget->area.x + 1;
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rectangle.y = margin_top + 1;
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rectangle.width = d->size;
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rectangle.height = d->box_height;
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draw_rectangle(ctx, rectangle, 1.0, true, d->bg);
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/* for graph drawing */
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rectangle.y = margin_top + d->box_height + 1; /* bottom left corner as starting point */
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rectangle.width = d->size; /* rectangle.height is not used */
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draw_graph_setup(ctx); /* setup some drawing options */
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/* gradient begin either left or on the right of the rectangle */
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if(d->grow == Right)
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pattern_area.x = rectangle.x + rectangle.width;
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else
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pattern_area.x = rectangle.x;
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if(d->filltop_total)
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{
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pattern_area.y = rectangle.y - rectangle.height;
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/* draw style = top */
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for(z = 0; z < d->filltop_total; z++)
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{
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if(d->filltop_vertical_grad[z])
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{
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pattern_area.width = 0;
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pattern_area.height = rectangle.height;
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}
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else
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{
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pattern_area.height = 0;
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if(d->grow == Right)
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pattern_area.width = -rectangle.width;
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else
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pattern_area.width = rectangle.width;
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}
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cur_index = *(d->filltop_index[z]);
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for(y = 0; y < d->size; y++)
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{
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/* draw this filltop data thing [z]. But figure out the part
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* what shall be visible. Therefore find the next smaller value
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* on this index (draw_from) - might be 0 (then draw from start) */
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for(tmp = 0, x = 0; x < d->filltop_total; x++)
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{
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if (x == z) /* no need to compare with itself */
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continue;
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/* current index's can be different (widget_tell might shift
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* some with a different frequenzy), so calculate
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* offset and compare accordingly finally */
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test_index = cur_index + (*(d->filltop_index[x]) - *(d->filltop_index[z]));
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if (test_index < 0)
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test_index = d->size + test_index; /* text_index is minus, since < 0 */
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else if(test_index >= d->size)
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test_index -= d->size;
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/* ... (test_)index to test for a smaller value found. */
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/* if such a smaller value (to not overdraw!) is there, store into 'tmp' */
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if(d->filltop[x][test_index] > tmp && d->filltop[x][test_index] < d->filltop[z][cur_index])
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tmp = d->filltop[x][test_index];
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}
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/* reverse values (because drawing from top) */
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d->draw_from[cur_index] = d->box_height - tmp; /* i.e. no smaller value -> from top of box */
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d->draw_to[cur_index] = d->box_height - d->filltop[z][cur_index]; /* i.e. on full graph -> 0 = bottom */
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if (--cur_index < 0) /* next index to compare to other values */
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cur_index = d->size - 1;
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}
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draw_graph(ctx, rectangle , d->draw_from, d->draw_to, *(d->filltop_index[z]), d->grow, pattern_area,
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&(d->filltop_color[z]), d->filltop_pcolor_center[z], d->filltop_pcolor_end[z]);
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}
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}
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pattern_area.y = rectangle.y;
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if(d->fillbottom_total)
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{
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/* draw style = bottom */
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for(z = 0; z < d->fillbottom_total; z++)
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{
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if(d->fillbottom_vertical_grad[z])
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{
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pattern_area.width = 0;
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pattern_area.height = -rectangle.height;
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}
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else
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{
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pattern_area.height = 0;
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if(d->grow == Right)
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pattern_area.width = -rectangle.width;
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else
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pattern_area.width = rectangle.width;
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}
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cur_index = *(d->fillbottom_index[z]);
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for(y = 0; y < d->size; y++)
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{
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for(tmp = 0, x = 0; x < d->fillbottom_total; x++)
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{
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if (x == z)
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continue;
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test_index = cur_index + (*(d->fillbottom_index[x]) - *(d->fillbottom_index[z]));
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if (test_index < 0)
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test_index = d->size + test_index;
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else if(test_index >= d->size)
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test_index -= d->size;
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if(d->fillbottom[x][test_index] > tmp && d->fillbottom[x][test_index] < d->fillbottom[z][cur_index])
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tmp = d->fillbottom[x][test_index];
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}
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d->draw_from[cur_index] = tmp;
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if (--cur_index < 0)
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cur_index = d->size - 1;
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}
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draw_graph(ctx, rectangle, d->draw_from, d->fillbottom[z], *(d->fillbottom_index[z]), d->grow,
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pattern_area, &(d->fillbottom_color[z]), d->fillbottom_pcolor_center[z], d->fillbottom_pcolor_end[z]);
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}
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}
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if(d->drawline_total)
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{
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/* draw style = line */
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for(z = 0; z < d->drawline_total; z++)
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{
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if(d->drawline_vertical_grad[z])
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{
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pattern_area.width = 0;
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pattern_area.height = -rectangle.height;
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}
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else
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{
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pattern_area.height = 0;
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if(d->grow == Right)
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pattern_area.width = -rectangle.width;
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else
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pattern_area.width = rectangle.width;
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}
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draw_graph_line(ctx, rectangle, d->drawline[z], *(d->drawline_index[z]), d->grow, pattern_area,
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&(d->drawline_color[z]), d->drawline_pcolor_center[z], d->drawline_pcolor_end[z]);
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}
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}
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/* draw border (after line-drawing, what paints 0-values to the border) */
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rectangle.x = widget->area.x;
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rectangle.y = margin_top;
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rectangle.width = d->size + 2;
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rectangle.height = d->box_height + 2;
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draw_rectangle(ctx, rectangle, 1.0, false, d->bordercolor);
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widget->area.width = d->width;
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widget->area.height = widget->statusbar->height;
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return widget->area.width;
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}
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static widget_tell_status_t
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graph_tell(widget_t *widget, char *property, char *new_value)
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{
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Data *d = widget->data;
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int i, u;
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float value;
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char *title, *setting;
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if(!d->data_items)
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return WIDGET_ERROR_CUSTOM; /* error already printed on _new */
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if(!new_value)
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return WIDGET_ERROR_NOVALUE;
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if(!a_strcmp(property, "data"))
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{
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title = strtok(new_value, " ");
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if(!(setting = strtok(NULL, " ")))
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return WIDGET_ERROR_NOVALUE;
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for(i = 0; i < d->data_items; i++)
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if(!a_strcmp(title, d->data_title[i]))
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{
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value = MAX(atof(setting), 0);
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if(++d->index[i] >= d->size) /* cycle inside the array */
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d->index[i] = 0;
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if(d->values[i]) /* scale option is true */
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{
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d->values[i][d->index[i]] = value;
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if(value > d->current_max[i]) /* a new maximum value found */
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{
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d->max_index[i] = d->index[i];
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d->current_max[i] = value;
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/* recalculate */
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for (u = 0; u < d->size; u++)
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d->lines[i][u] = (int) (d->values[i][u] * (d->box_height) / d->current_max[i] + 0.5);
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}
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/* old max_index reached + current_max > normal, re-check/generate */
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else if(d->max_index[i] == d->index[i] && d->current_max[i] > d->max[i])
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{
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/* find the new max */
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for(u = 0; u < d->size; u++)
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if(d->values[i][u] > d->values[i][d->max_index[i]])
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d->max_index[i] = u;
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d->current_max[i] = MAX(d->values[i][d->max_index[i]], d->max[i]);
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/* recalculate */
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for(u = 0; u < d->size; u++)
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d->lines[i][u] = (int) (d->values[i][u] * d->box_height / d->current_max[i] + 0.5);
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}
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else
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d->lines[i][d->index[i]] = (int) (value * d->box_height / d->current_max[i] + 0.5);
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}
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else /* scale option is false - limit to d->box_height */
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{
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if (value < d->current_max[i])
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d->lines[i][d->index[i]] = (int) (value * d->box_height / d->current_max[i] + 0.5);
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else
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d->lines[i][d->index[i]] = d->box_height;
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}
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return WIDGET_NOERROR;
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}
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return WIDGET_ERROR_FORMAT_SECTION;
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}
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else if(!a_strcmp(property, "height"))
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d->height = atof(new_value);
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else if(!a_strcmp(property, "bg"))
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{
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if(!draw_color_new(globalconf.connection,
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widget->statusbar->phys_screen,
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new_value, &d->bg))
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return WIDGET_ERROR_FORMAT_COLOR;
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}
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else if(!a_strcmp(property, "bordercolor"))
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{
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if(!draw_color_new(globalconf.connection,
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widget->statusbar->phys_screen,
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new_value, &d->bordercolor))
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return WIDGET_ERROR_FORMAT_COLOR;
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}
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else if(!a_strcmp(property, "grow"))
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switch((d->grow = position_get_from_str(new_value)))
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{
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case Left:
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case Right:
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break;
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default:
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warn("error changing property %s of widget %s, must be 'left' or 'right'\n",
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property, widget->name);
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return WIDGET_ERROR_CUSTOM;
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}
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else
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return WIDGET_ERROR;
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return WIDGET_NOERROR;
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}
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widget_t *
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graph_new(statusbar_t *statusbar, cfg_t *config)
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{
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widget_t *w;
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Data *d;
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cfg_t *cfg;
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char *color;
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int i;
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char *type;
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xcolor_t tmp_color = { 0, 0, 0, 0 };
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xcolor_t *ptmp_color_center;
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xcolor_t *ptmp_color_end;
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w = p_new(widget_t, 1);
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widget_common_new(w, statusbar, config);
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w->draw = graph_draw;
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w->tell = graph_tell;
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w->alignment = cfg_getalignment(config, "align");
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d = w->data = p_new(Data, 1);
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d->width = cfg_getint(config, "width");
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d->height = cfg_getfloat(config, "height");
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d->size = d->width - 2;
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if(!(d->data_items = cfg_size(config, "data")))
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{
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warn("graph widget needs at least one data section\n");
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return w;
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}
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d->grow = cfg_getposition(config, "grow");
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if(d->grow != Left && d->grow != Right)
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{
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warn("graph widget: 'grow' argument must be 'left' or 'right'\n");
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d->data_items = 0; /* disable widget drawing */
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return w;
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}
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d->draw_from = p_new(int, d->size);
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d->draw_to = p_new(int, d->size);
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d->fillbottom = p_new(int *, d->size);
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d->fillbottom_index = p_new(int *, d->size);
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d->filltop = p_new(int *, d->size);
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d->filltop_index = p_new(int *, d->size);
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d->drawline = p_new(int *, d->size);
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d->drawline_index = p_new(int *, d->size);
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d->data_title = p_new(char *, d->data_items);
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d->values = p_new(float *, d->data_items);
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d->lines = p_new(int *, d->data_items);
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d->filltop_color = p_new(xcolor_t, d->data_items);
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d->filltop_pcolor_center = p_new(xcolor_t *, d->data_items);
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d->filltop_pcolor_end = p_new(xcolor_t *, d->data_items);
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d->filltop_vertical_grad = p_new(bool, d->data_items);
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d->fillbottom_color = p_new(xcolor_t, d->data_items);
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d->fillbottom_pcolor_center = p_new(xcolor_t *, d->data_items);
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d->fillbottom_pcolor_end = p_new(xcolor_t *, d->data_items);
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d->fillbottom_vertical_grad = p_new(bool, d->data_items);
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d->drawline_color = p_new(xcolor_t, d->data_items);
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d->drawline_pcolor_center = p_new(xcolor_t *, d->data_items);
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d->drawline_pcolor_end = p_new(xcolor_t *, d->data_items);
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d->drawline_vertical_grad = p_new(bool, d->data_items);
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d->max_index = p_new(int, d->data_items);
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d->index = p_new(int, d->data_items);
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d->current_max = p_new(float, d->data_items);
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d->max = p_new(float, d->data_items);
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for(i = 0; i < d->data_items; i++)
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{
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ptmp_color_center = ptmp_color_end = NULL;
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cfg = cfg_getnsec(config, "data", i);
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d->data_title[i] = a_strdup(cfg_title(cfg));
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if((color = cfg_getstr(cfg, "fg")))
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draw_color_new(globalconf.connection, statusbar->phys_screen, color, &tmp_color);
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else
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tmp_color = globalconf.screens[statusbar->screen].styles.normal.fg;
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if((color = cfg_getstr(cfg, "fg_center")))
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{
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ptmp_color_center = p_new(xcolor_t, 1);
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draw_color_new(globalconf.connection, statusbar->phys_screen, color, ptmp_color_center);
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}
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if((color = cfg_getstr(cfg, "fg_end")))
|
|
{
|
|
ptmp_color_end = p_new(xcolor_t, 1);
|
|
draw_color_new(globalconf.connection, statusbar->phys_screen, color, ptmp_color_end);
|
|
}
|
|
|
|
if (cfg_getbool(cfg, "scale"))
|
|
d->values[i] = p_new(float, d->size); /* not null -> scale = true */
|
|
|
|
/* prevent: division by zero */
|
|
d->current_max[i] = d->max[i] = cfg_getfloat(cfg, "max");
|
|
d->lines[i] = p_new(int, d->size);
|
|
|
|
/* filter each style-typ into it's own array (for easy looping later)*/
|
|
|
|
if ((type = cfg_getstr(cfg, "draw_style")))
|
|
{
|
|
if(!a_strncmp(type, "bottom", sizeof("bottom")))
|
|
{
|
|
d->fillbottom[d->fillbottom_total] = d->lines[i];
|
|
d->fillbottom_index[d->fillbottom_total] = &d->index[i];
|
|
d->fillbottom_color[d->fillbottom_total] = tmp_color;
|
|
d->fillbottom_pcolor_center[d->fillbottom_total] = ptmp_color_center;
|
|
d->fillbottom_pcolor_end[d->fillbottom_total] = ptmp_color_end;
|
|
d->fillbottom_vertical_grad[d->fillbottom_total] = cfg_getbool(cfg, "vertical_gradient");
|
|
d->fillbottom_total++;
|
|
}
|
|
else if (!a_strncmp(type, "top", sizeof("top")))
|
|
{
|
|
d->filltop[d->filltop_total] = d->lines[i];
|
|
d->filltop_index[d->filltop_total] = &d->index[i];
|
|
d->filltop_color[d->filltop_total] = tmp_color;
|
|
d->filltop_pcolor_center[d->filltop_total] = ptmp_color_center;
|
|
d->filltop_pcolor_end[d->filltop_total] = ptmp_color_end;
|
|
d->filltop_vertical_grad[d->filltop_total] = cfg_getbool(cfg, "vertical_gradient");
|
|
d->filltop_total++;
|
|
}
|
|
else if (!a_strncmp(type, "line", sizeof("line")))
|
|
{
|
|
d->drawline[d->drawline_total] = d->lines[i];
|
|
d->drawline_index[d->drawline_total] = &d->index[i];
|
|
d->drawline_color[d->drawline_total] = tmp_color;
|
|
d->drawline_pcolor_center[d->drawline_total] = ptmp_color_center;
|
|
d->drawline_pcolor_end[d->drawline_total] = ptmp_color_end;
|
|
d->drawline_vertical_grad[d->drawline_total] = cfg_getbool(cfg, "vertical_gradient");
|
|
d->drawline_total++;
|
|
}
|
|
}
|
|
}
|
|
|
|
if((color = cfg_getstr(config, "bg")))
|
|
draw_color_new(globalconf.connection, statusbar->phys_screen, color, &d->bg);
|
|
else
|
|
d->bg = globalconf.screens[statusbar->screen].styles.normal.bg;
|
|
|
|
if((color = cfg_getstr(config, "bordercolor")))
|
|
draw_color_new(globalconf.connection, statusbar->phys_screen, color, &d->bordercolor);
|
|
else
|
|
d->bordercolor = tmp_color;
|
|
|
|
return w;
|
|
}
|
|
// vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80
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