public static void draw_the_grid(Canvas this_g, Vector these_labels) { double rounded_max = 0.0; double rounded_min = 0.0; double rounded_max_temp; Object curElt; String[] cur_elt_array; int left_margin_d, right_margin_d; if( draw_only_this_idx == -1) curElt = these_labels.elementAt(0); // default it to 1st one if non set else curElt = these_labels.elementAt(draw_only_this_idx); // now just the 1st elt cur_elt_array = (String[])curElt; rounded_max = get_ceiling_or_floor (Double.parseDouble(cur_elt_array[2]) , true); rounded_min = get_ceiling_or_floor (Double.parseDouble(cur_elt_array[3]) , false); // ok so now we have the max value of the set just get a cool ceiling and we go on final Paint paint = new Paint(); paint.setTextSize(15); left_margin_d = getCurTextLengthInPixels(paint, Double.toString(rounded_max)); //keep the position for later drawing -- leave space for the legend int p_height = 170; int p_width = 220; int[] tmp_draw_sizes = {2 + left_margin_d, 25,p_width - 2 - left_margin_d ,p_height - 25 -5}; drawSizes = tmp_draw_sizes; //keep it for later processing //with the mzrgins worked out draw the plotting grid paint.setStyle(Paint.Style.FILL); paint.setColor(Color.WHITE ); // Android does by coords this_g.drawRect(drawSizes[0], drawSizes[1],drawSizes[0]+ drawSizes[2], drawSizes[1]+ drawSizes[3] , paint); paint.setColor(Color.GRAY ); // finally draw the grid paint.setStyle(Paint.Style.STROKE); this_g.drawRect(drawSizes[0], drawSizes[1],drawSizes[0]+ drawSizes[2], drawSizes[1]+ drawSizes[3] , paint); for(int i=1; i < 5 ; i++) { this_g.drawLine(drawSizes[0], drawSizes[1] + (i * drawSizes[3] / 5), drawSizes[0] + drawSizes[2], drawSizes[1] + (i * drawSizes[3] / 5), paint); this_g.drawLine(drawSizes[0]+ (i * drawSizes[2] / 5), drawSizes[1], drawSizes[0] + (i * drawSizes[2] / 5), drawSizes[1] + drawSizes[3], paint); } // good for one value print_axis_values_4_grid(this_g, cur_elt_array[1] , Double.toString(rounded_max) , Double.toString(rounded_min), cur_elt_array[0] , 2 ,0 ); }
原创文章,作者:奋斗,如若转载,请注明出处:https://blog.ytso.com/11074.html