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007787107c
e.g.: graph:set("draw_style", "data-title line") Signed-off-by: Julien Danjou <julien@danjou.info>
540 lines
18 KiB
C
540 lines
18 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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extern awesome_t globalconf;
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typedef enum
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{
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Top_Style = 1,
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Bottom_Style,
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Line_Style
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} draw_style_t;
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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 (0.0-1.0; 1.0 = height of bar) */
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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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bool *scale; /** Scale the graph */
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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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draw_style_t *draw_style; /** Draw style of according index */
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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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bool *vertical_gradient; /** Create a vertical color gradient */
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xcolor_t *color_start; /** Color of them */
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xcolor_t **pcolor_center; /** Color at middle of graph */
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xcolor_t **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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/* the same as the progressbar_pcolor_set may use a common function */
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static void
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graph_pcolor_set(xcolor_t **ppcolor, char *new_color)
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{
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bool flag = false;
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if(!*ppcolor)
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{
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flag = true; /* p_delete && restore to NULL, if xcolor_new unsuccessful */
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*ppcolor = p_new(xcolor_t, 1);
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}
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if(!(xcolor_new(globalconf.connection,
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globalconf.default_screen,
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new_color, *ppcolor))
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&& flag)
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p_delete(ppcolor);
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}
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static void
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graph_data_add(Data *d, const char *new_data_title)
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{
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d->data_items++;
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/* memory (re-)allocating + initialising */
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p_realloc(&(d->values), d->data_items);
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d->values[d->data_items - 1] = p_new(float, d->size);
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p_realloc(&(d->lines), d->data_items);
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d->lines[d->data_items - 1] = p_new(int, d->size);
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p_realloc(&(d->scale), d->data_items);
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d->scale[d->data_items - 1] = false;
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p_realloc(&(d->index), d->data_items);
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d->index[d->data_items - 1] = 0;
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p_realloc(&(d->max_index), d->data_items);
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d->max_index[d->data_items - 1] = 0;
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p_realloc(&(d->current_max), d->data_items);
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d->current_max[d->data_items - 1] = 0;
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p_realloc(&(d->max), d->data_items);
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d->max[d->data_items - 1] = 100.0;
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p_realloc(&(d->data_title), d->data_items);
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d->data_title[d->data_items - 1] = a_strdup(new_data_title);
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p_realloc(&(d->color_start), d->data_items);
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d->color_start[d->data_items - 1] = globalconf.colors.fg;
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p_realloc(&(d->pcolor_center), d->data_items);
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d->pcolor_center[d->data_items - 1] = NULL;
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p_realloc(&(d->pcolor_end), d->data_items);
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d->pcolor_end[d->data_items - 1] = NULL;
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p_realloc(&(d->vertical_gradient), d->data_items);
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d->vertical_gradient[d->data_items - 1] = true;
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p_realloc(&(d->draw_style), d->data_items);
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d->draw_style[d->data_items - 1] = Bottom_Style;
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}
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static int
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graph_draw(draw_context_t *ctx,
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int screen __attribute__ ((unused)),
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widget_node_t *w,
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int width, int height, int offset,
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int used __attribute__ ((unused)),
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void *p __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 = w->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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w->area.x = widget_calculate_offset(width,
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d->width, offset,
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w->widget->align);
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w->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) (height * d->height + 0.5) - 2;
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margin_top = (int)((height - (d->box_height + 2)) / 2 + 0.5) + w->area.y;
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/* draw background */
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rectangle.x = w->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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pattern_area.y = rectangle.y - rectangle.height;
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/* draw style = top */
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for(z = 0; z < d->data_items; z++)
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{
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if(d->draw_style[z] != Top_Style)
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continue;
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if(d->vertical_gradient[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->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->data_items; x++)
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{
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if(d->draw_style[x] != Top_Style)
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continue;
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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->index[x] - d->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->lines[x][test_index] > tmp && d->lines[x][test_index] < d->lines[z][cur_index])
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tmp = d->lines[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->lines[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->index[z], d->grow, pattern_area,
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&(d->color_start[z]), d->pcolor_center[z], d->pcolor_end[z]);
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}
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pattern_area.y = rectangle.y;
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/* draw style = bottom */
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for(z = 0; z < d->data_items; z++)
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{
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if(d->draw_style[z] != Bottom_Style)
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continue;
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if(d->vertical_gradient[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->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->data_items; x++)
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{
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if(d->draw_style[x] != Bottom_Style)
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continue;
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if (x == z)
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continue;
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test_index = cur_index + (d->index[x] - d->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->lines[x][test_index] > tmp && d->lines[x][test_index] < d->lines[z][cur_index])
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tmp = d->lines[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->lines[z], d->index[z], d->grow, pattern_area,
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&(d->color_start[z]), d->pcolor_center[z], d->pcolor_end[z]);
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}
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/* draw style = line */
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for(z = 0; z < d->data_items; z++)
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{
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if(d->draw_style[z] != Line_Style)
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continue;
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if(d->vertical_gradient[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->lines[z], d->index[z], d->grow, pattern_area,
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&(d->color_start[z]), d->pcolor_center[z], d->pcolor_end[z]);
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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 = w->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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w->area.width = d->width;
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w->area.height = height;
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return w->area.width;
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}
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static widget_tell_status_t
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graph_tell(widget_t *widget, const char *property, const char *new_value)
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{
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Data *d = widget->data;
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int i, u, fi;
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float value;
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char *title, *setting;
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char *new_val;
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bool found;
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if(!new_value)
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return WIDGET_ERROR_NOVALUE;
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/* following properties need a datasection */
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else if(!a_strcmp(property, "data")
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|| !a_strcmp(property, "fg")
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|| !a_strcmp(property, "fg_center")
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|| !a_strcmp(property, "fg_end")
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|| !a_strcmp(property, "vertical_gradient")
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|| !a_strcmp(property, "scale")
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|| !a_strcmp(property, "max")
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|| !a_strcmp(property, "draw_style"))
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{
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/* check if this section is defined already */
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new_val = a_strdup(new_value);
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title = strtok(new_val, " ");
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if(!(setting = strtok(NULL, " ")))
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{
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p_delete(&new_val);
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return WIDGET_ERROR_NOVALUE;
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}
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for(found = false, fi = 0; fi < d->data_items; fi++)
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{
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if(!a_strcmp(title, d->data_title[fi]))
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{
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found = true;
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break;
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}
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}
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/* no section found -> create one */
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if(!found)
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{
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graph_data_add(d, title);
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fi = d->data_items - 1;
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}
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/* change values accordingly... */
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if(!a_strcmp(property, "data"))
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{
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/* assign incoming value */
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value = MAX(atof(setting), 0);
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if(++d->index[fi] >= d->size) /* cycle inside the array */
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d->index[fi] = 0;
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if(d->scale[fi]) /* scale option is true */
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{
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d->values[fi][d->index[fi]] = value;
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if(value > d->current_max[fi]) /* a new maximum value found */
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{
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d->max_index[fi] = d->index[fi];
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d->current_max[fi] = value;
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/* recalculate */
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for (u = 0; u < d->size; u++)
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d->lines[fi][u] = (int) (d->values[fi][u] * (d->box_height) / d->current_max[fi] + 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[fi] == d->index[fi] && d->current_max[fi] > d->max[fi])
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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[fi][u] > d->values[fi][d->max_index[fi]])
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d->max_index[fi] = u;
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d->current_max[fi] = MAX(d->values[fi][d->max_index[fi]], d->max[fi]);
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/* recalculate */
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for(u = 0; u < d->size; u++)
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d->lines[fi][u] = (int) (d->values[fi][u] * d->box_height / d->current_max[fi] + 0.5);
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}
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else
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d->lines[fi][d->index[fi]] = (int) (value * d->box_height / d->current_max[fi] + 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->max[fi])
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d->lines[fi][d->index[fi]] = (int) (value * d->box_height / d->max[fi] + 0.5);
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else
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d->lines[fi][d->index[fi]] = d->box_height;
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}
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p_delete(&new_val);
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return WIDGET_NOERROR;
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}
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else if(!a_strcmp(property, "fg"))
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xcolor_new(globalconf.connection, globalconf.default_screen, setting, &(d->color_start[fi]));
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else if(!a_strcmp(property, "fg_center"))
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graph_pcolor_set(&(d->pcolor_center[fi]), setting);
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else if(!a_strcmp(property, "fg_end"))
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graph_pcolor_set(&(d->pcolor_end[fi]), setting);
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else if(!a_strcmp(property, "vertical_gradient"))
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d->vertical_gradient[fi] = a_strtobool(setting);
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else if(!a_strcmp(property, "scale"))
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d->scale[fi] = a_strtobool(setting);
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else if(!a_strcmp(property, "max"))
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{
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d->max[fi] = atof(setting);
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d->current_max[fi] = d->max[fi];
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}
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else if(!a_strcmp(property, "draw_style"))
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{
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if(!a_strcmp(setting, "bottom"))
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d->draw_style[fi] = Bottom_Style;
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else if(!a_strcmp(setting, "line"))
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d->draw_style[fi] = Line_Style;
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else if(!a_strcmp(setting, "top"))
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d->draw_style[fi] = Top_Style;
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else
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{
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warn("'error changing property %s of widget %s, must be 'bottom', 'top' or 'line'",
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property, widget->name);
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p_delete(&new_val);
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return WIDGET_ERROR_CUSTOM;
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}
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}
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p_delete(&new_val);
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return WIDGET_NOERROR;
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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, "width"))
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{
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d->width = atoi(new_value);
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d->size = d->width - 2;
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/* re-allocate/initialise necessary values */
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for(i = 0; i < d->data_items; i++)
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{
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p_delete(&d->values[i]);
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p_delete(&d->lines[i]);
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d->values[i] = p_new(float, d->size);
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d->lines[i] = p_new(int, d->size);
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d->index[i] = 0;
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d->current_max[i] = 0;
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d->max_index[i] = 0;
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}
|
|
}
|
|
else if(!a_strcmp(property, "bg"))
|
|
{
|
|
if(!xcolor_new(globalconf.connection,
|
|
globalconf.default_screen,
|
|
new_value, &d->bg))
|
|
return WIDGET_ERROR_FORMAT_COLOR;
|
|
}
|
|
else if(!a_strcmp(property, "bordercolor"))
|
|
{
|
|
if(!xcolor_new(globalconf.connection,
|
|
globalconf.default_screen,
|
|
new_value, &d->bordercolor))
|
|
return WIDGET_ERROR_FORMAT_COLOR;
|
|
}
|
|
else if(!a_strcmp(property, "grow"))
|
|
switch((d->grow = position_get_from_str(new_value)))
|
|
{
|
|
case Left:
|
|
case Right:
|
|
break;
|
|
default:
|
|
warn("error changing property %s of widget %s, must be 'left' or 'right'",
|
|
property, widget->name);
|
|
return WIDGET_ERROR_CUSTOM;
|
|
}
|
|
else
|
|
return WIDGET_ERROR;
|
|
|
|
return WIDGET_NOERROR;
|
|
}
|
|
|
|
widget_t *
|
|
graph_new(alignment_t align)
|
|
{
|
|
widget_t *w;
|
|
Data *d;
|
|
|
|
w = p_new(widget_t, 1);
|
|
widget_common_new(w);
|
|
|
|
w->draw = graph_draw;
|
|
w->tell = graph_tell;
|
|
w->align = align;
|
|
d = w->data = p_new(Data, 1);
|
|
|
|
d->width = 80;
|
|
d->height = 0.80;
|
|
d->size = d->width - 2;
|
|
d->grow = Left;
|
|
d->draw_from = p_new(int, d->size);
|
|
d->draw_to = p_new(int, d->size);
|
|
|
|
d->bg = globalconf.colors.bg;
|
|
d->bordercolor = globalconf.colors.fg;
|
|
|
|
return w;
|
|
}
|
|
// vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80
|