healthd/healthd_draw.cpp - LeafOS-Project/android_system_core - Gitiles

 /*
  * Copyright (C) 2017 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *      http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */

 #include <android-base/stringprintf.h>
 #include <batteryservice/BatteryService.h>
 #include <cutils/klog.h>

 #include "charger.sysprop.h"
 #include "healthd_draw.h"

 #define LOGE(x...) KLOG_ERROR("charger", x);
 #define LOGW(x...) KLOG_WARNING("charger", x);
 #define LOGV(x...) KLOG_DEBUG("charger", x);

 static bool get_split_screen() {
     return android::sysprop::ChargerProperties::draw_split_screen().value_or(false);
 }

 static int get_split_offset() {
     int64_t value = android::sysprop::ChargerProperties::draw_split_offset().value_or(0);
     if (value < static_cast<int64_t>(std::numeric_limits<int>::min())) {
         LOGW("draw_split_offset = %" PRId64 " overflow for an int; resetting to %d.\n", value,
              std::numeric_limits<int>::min());
         value = std::numeric_limits<int>::min();
     }
     if (value > static_cast<int64_t>(std::numeric_limits<int>::max())) {
         LOGW("draw_split_offset = %" PRId64 " overflow for an int; resetting to %d.\n", value,
              std::numeric_limits<int>::max());
         value = std::numeric_limits<int>::max();
     }
     return static_cast<int>(value);
 }

 HealthdDraw::HealthdDraw(animation* anim)
     : kSplitScreen(get_split_screen()), kSplitOffset(get_split_offset()) {
     int ret = gr_init();

     if (ret < 0) {
         LOGE("gr_init failed\n");
         graphics_available = false;
         return;
     }

     graphics_available = true;
     sys_font = gr_sys_font();
     if (sys_font == nullptr) {
         LOGW("No system font, screen fallback text not available\n");
     } else {
         gr_font_size(sys_font, &char_width_, &char_height_);
     }

     screen_width_ = gr_fb_width() / (kSplitScreen ? 2 : 1);
     screen_height_ = gr_fb_height();

     int res;
     if (!anim->text_clock.font_file.empty() &&
         (res = gr_init_font(anim->text_clock.font_file.c_str(), &anim->text_clock.font)) < 0) {
         LOGE("Could not load time font (%d)\n", res);
     }
     if (!anim->text_percent.font_file.empty() &&
         (res = gr_init_font(anim->text_percent.font_file.c_str(), &anim->text_percent.font)) < 0) {
         LOGE("Could not load percent font (%d)\n", res);
     }
 }

 HealthdDraw::~HealthdDraw() {}

 void HealthdDraw::redraw_screen(const animation* batt_anim, GRSurface* surf_unknown) {
     if (!graphics_available) return;
     clear_screen();

     /* try to display *something* */
     if (batt_anim->cur_status == BATTERY_STATUS_UNKNOWN || batt_anim->cur_level < 0 ||
         batt_anim->num_frames == 0)
         draw_unknown(surf_unknown);
     else
         draw_battery(batt_anim);
     gr_flip();
 }

 void HealthdDraw::blank_screen(bool blank) {
     if (!graphics_available) return;
     gr_fb_blank(blank);
 }

 void HealthdDraw::clear_screen(void) {
     if (!graphics_available) return;
     gr_color(0, 0, 0, 255);
     gr_clear();
 }

 int HealthdDraw::draw_surface_centered(GRSurface* surface) {
     if (!graphics_available) return 0;

     int w = gr_get_width(surface);
     int h = gr_get_height(surface);
     int x = (screen_width_ - w) / 2 + kSplitOffset;
     int y = (screen_height_ - h) / 2;

     LOGV("drawing surface %dx%d+%d+%d\n", w, h, x, y);
     gr_blit(surface, 0, 0, w, h, x, y);
     if (kSplitScreen) {
         x += screen_width_ - 2 * kSplitOffset;
         LOGV("drawing surface %dx%d+%d+%d\n", w, h, x, y);
         gr_blit(surface, 0, 0, w, h, x, y);
     }

     return y + h;
 }

 int HealthdDraw::draw_text(const GRFont* font, int x, int y, const char* str) {
     if (!graphics_available) return 0;
     int str_len_px = gr_measure(font, str);

     if (x < 0) x = (screen_width_ - str_len_px) / 2;
     if (y < 0) y = (screen_height_ - char_height_) / 2;
     gr_text(font, x + kSplitOffset, y, str, false /* bold */);
     if (kSplitScreen) gr_text(font, x - kSplitOffset + screen_width_, y, str, false /* bold */);

     return y + char_height_;
 }

 void HealthdDraw::determine_xy(const animation::text_field& field,
                                const int length, int* x, int* y) {
   *x = field.pos_x;

   int str_len_px = length * field.font->char_width;
   if (field.pos_x == CENTER_VAL) {
     *x = (screen_width_ - str_len_px) / 2;
   } else if (field.pos_x >= 0) {
     *x = field.pos_x;
   } else {  // position from max edge
     *x = screen_width_ + field.pos_x - str_len_px - kSplitOffset;
   }

   *y = field.pos_y;

   if (field.pos_y == CENTER_VAL) {
     *y = (screen_height_ - field.font->char_height) / 2;
   } else if (field.pos_y >= 0) {
     *y = field.pos_y;
   } else {  // position from max edge
     *y = screen_height_ + field.pos_y - field.font->char_height;
   }
 }

 void HealthdDraw::draw_clock(const animation* anim) {
     static constexpr char CLOCK_FORMAT[] = "%H:%M";
     static constexpr int CLOCK_LENGTH = 6;

     const animation::text_field& field = anim->text_clock;

     if (!graphics_available || field.font == nullptr || field.font->char_width == 0 ||
         field.font->char_height == 0)
         return;

     time_t rawtime;
     time(&rawtime);
     tm* time_info = localtime(&rawtime);

     char clock_str[CLOCK_LENGTH];
     size_t length = strftime(clock_str, CLOCK_LENGTH, CLOCK_FORMAT, time_info);
     if (length != CLOCK_LENGTH - 1) {
         LOGE("Could not format time\n");
         return;
     }

     int x, y;
     determine_xy(field, length, &x, &y);

     LOGV("drawing clock %s %d %d\n", clock_str, x, y);
     gr_color(field.color_r, field.color_g, field.color_b, field.color_a);
     draw_text(field.font, x, y, clock_str);
 }

 void HealthdDraw::draw_percent(const animation* anim) {
     if (!graphics_available) return;
     int cur_level = anim->cur_level;
     if (anim->cur_status == BATTERY_STATUS_FULL) {
         cur_level = 100;
     }

     if (cur_level < 0) return;

     const animation::text_field& field = anim->text_percent;
     if (field.font == nullptr || field.font->char_width == 0 || field.font->char_height == 0) {
         return;
     }

     std::string str = base::StringPrintf("%d%%", cur_level);

     int x, y;
     determine_xy(field, str.size(), &x, &y);

     LOGV("drawing percent %s %d %d\n", str.c_str(), x, y);
     gr_color(field.color_r, field.color_g, field.color_b, field.color_a);
     draw_text(field.font, x, y, str.c_str());
 }

 void HealthdDraw::draw_battery(const animation* anim) {
     if (!graphics_available) return;
     const animation::frame& frame = anim->frames[anim->cur_frame];

     if (anim->num_frames != 0) {
         draw_surface_centered(frame.surface);
         LOGV("drawing frame #%d min_cap=%d time=%d\n", anim->cur_frame, frame.min_level,
              frame.disp_time);
     }
     draw_clock(anim);
     draw_percent(anim);
 }

 void HealthdDraw::draw_unknown(GRSurface* surf_unknown) {
   int y;
   if (surf_unknown) {
       draw_surface_centered(surf_unknown);
   } else if (sys_font) {
       gr_color(0xa4, 0xc6, 0x39, 255);
       y = draw_text(sys_font, -1, -1, "Charging!");
       draw_text(sys_font, -1, y + 25, "?\?/100");
   } else {
       LOGW("Charging, level unknown\n");
   }
 }
	/*
	* Copyright (C) 2017 The Android Open Source Project
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*/

	#include <android-base/stringprintf.h>
	#include <batteryservice/BatteryService.h>
	#include <cutils/klog.h>

	#include "charger.sysprop.h"
	#include "healthd_draw.h"

	#define LOGE(x...) KLOG_ERROR("charger", x);
	#define LOGW(x...) KLOG_WARNING("charger", x);
	#define LOGV(x...) KLOG_DEBUG("charger", x);

	static bool get_split_screen() {
	return android::sysprop::ChargerProperties::draw_split_screen().value_or(false);
	}

	static int get_split_offset() {
	int64_t value = android::sysprop::ChargerProperties::draw_split_offset().value_or(0);
	if (value < static_cast<int64_t>(std::numeric_limits<int>::min())) {
	LOGW("draw_split_offset = %" PRId64 " overflow for an int; resetting to %d.\n", value,
	std::numeric_limits<int>::min());
	value = std::numeric_limits<int>::min();
	}
	if (value > static_cast<int64_t>(std::numeric_limits<int>::max())) {
	LOGW("draw_split_offset = %" PRId64 " overflow for an int; resetting to %d.\n", value,
	std::numeric_limits<int>::max());
	value = std::numeric_limits<int>::max();
	}
	return static_cast<int>(value);
	}

	HealthdDraw::HealthdDraw(animation* anim)
	: kSplitScreen(get_split_screen()), kSplitOffset(get_split_offset()) {
	int ret = gr_init();

	if (ret < 0) {
	LOGE("gr_init failed\n");
	graphics_available = false;
	return;
	}

	graphics_available = true;
	sys_font = gr_sys_font();
	if (sys_font == nullptr) {
	LOGW("No system font, screen fallback text not available\n");
	} else {
	gr_font_size(sys_font, &char_width_, &char_height_);
	}

	screen_width_ = gr_fb_width() / (kSplitScreen ? 2 : 1);
	screen_height_ = gr_fb_height();

	int res;
	if (!anim->text_clock.font_file.empty() &&
	(res = gr_init_font(anim->text_clock.font_file.c_str(), &anim->text_clock.font)) < 0) {
	LOGE("Could not load time font (%d)\n", res);
	}
	if (!anim->text_percent.font_file.empty() &&
	(res = gr_init_font(anim->text_percent.font_file.c_str(), &anim->text_percent.font)) < 0) {
	LOGE("Could not load percent font (%d)\n", res);
	}
	}

	HealthdDraw::~HealthdDraw() {}

	void HealthdDraw::redraw_screen(const animation* batt_anim, GRSurface* surf_unknown) {
	if (!graphics_available) return;
	clear_screen();

	/* try to display something */
	if (batt_anim->cur_status == BATTERY_STATUS_UNKNOWN \|\| batt_anim->cur_level < 0 \|\|
	batt_anim->num_frames == 0)
	draw_unknown(surf_unknown);
	else
	draw_battery(batt_anim);
	gr_flip();
	}

	void HealthdDraw::blank_screen(bool blank) {
	if (!graphics_available) return;
	gr_fb_blank(blank);
	}

	void HealthdDraw::clear_screen(void) {
	if (!graphics_available) return;
	gr_color(0, 0, 0, 255);
	gr_clear();
	}

	int HealthdDraw::draw_surface_centered(GRSurface* surface) {
	if (!graphics_available) return 0;

	int w = gr_get_width(surface);
	int h = gr_get_height(surface);
	int x = (screen_width_ - w) / 2 + kSplitOffset;
	int y = (screen_height_ - h) / 2;

	LOGV("drawing surface %dx%d+%d+%d\n", w, h, x, y);
	gr_blit(surface, 0, 0, w, h, x, y);
	if (kSplitScreen) {
	x += screen_width_ - 2 * kSplitOffset;
	LOGV("drawing surface %dx%d+%d+%d\n", w, h, x, y);
	gr_blit(surface, 0, 0, w, h, x, y);
	}

	return y + h;
	}

	int HealthdDraw::draw_text(const GRFont* font, int x, int y, const char* str) {
	if (!graphics_available) return 0;
	int str_len_px = gr_measure(font, str);

	if (x < 0) x = (screen_width_ - str_len_px) / 2;
	if (y < 0) y = (screen_height_ - char_height_) / 2;
	gr_text(font, x + kSplitOffset, y, str, false /* bold */);
	if (kSplitScreen) gr_text(font, x - kSplitOffset + screen_width_, y, str, false /* bold */);

	return y + char_height_;
	}

	void HealthdDraw::determine_xy(const animation::text_field& field,
	const int length, int* x, int* y) {
	*x = field.pos_x;

	int str_len_px = length * field.font->char_width;
	if (field.pos_x == CENTER_VAL) {
	*x = (screen_width_ - str_len_px) / 2;
	} else if (field.pos_x >= 0) {
	*x = field.pos_x;
	} else { // position from max edge
	*x = screen_width_ + field.pos_x - str_len_px - kSplitOffset;
	}

	*y = field.pos_y;

	if (field.pos_y == CENTER_VAL) {
	*y = (screen_height_ - field.font->char_height) / 2;
	} else if (field.pos_y >= 0) {
	*y = field.pos_y;
	} else { // position from max edge
	*y = screen_height_ + field.pos_y - field.font->char_height;
	}
	}

	void HealthdDraw::draw_clock(const animation* anim) {
	static constexpr char CLOCK_FORMAT[] = "%H:%M";
	static constexpr int CLOCK_LENGTH = 6;

	const animation::text_field& field = anim->text_clock;

	if (!graphics_available \|\| field.font == nullptr \|\| field.font->char_width == 0 \|\|
	field.font->char_height == 0)
	return;

	time_t rawtime;
	time(&rawtime);
	tm* time_info = localtime(&rawtime);

	char clock_str[CLOCK_LENGTH];
	size_t length = strftime(clock_str, CLOCK_LENGTH, CLOCK_FORMAT, time_info);
	if (length != CLOCK_LENGTH - 1) {
	LOGE("Could not format time\n");
	return;
	}

	int x, y;
	determine_xy(field, length, &x, &y);

	LOGV("drawing clock %s %d %d\n", clock_str, x, y);
	gr_color(field.color_r, field.color_g, field.color_b, field.color_a);
	draw_text(field.font, x, y, clock_str);
	}

	void HealthdDraw::draw_percent(const animation* anim) {
	if (!graphics_available) return;
	int cur_level = anim->cur_level;
	if (anim->cur_status == BATTERY_STATUS_FULL) {
	cur_level = 100;
	}

	if (cur_level < 0) return;

	const animation::text_field& field = anim->text_percent;
	if (field.font == nullptr \|\| field.font->char_width == 0 \|\| field.font->char_height == 0) {
	return;
	}

	std::string str = base::StringPrintf("%d%%", cur_level);

	int x, y;
	determine_xy(field, str.size(), &x, &y);

	LOGV("drawing percent %s %d %d\n", str.c_str(), x, y);
	gr_color(field.color_r, field.color_g, field.color_b, field.color_a);
	draw_text(field.font, x, y, str.c_str());
	}

	void HealthdDraw::draw_battery(const animation* anim) {
	if (!graphics_available) return;
	const animation::frame& frame = anim->frames[anim->cur_frame];

	if (anim->num_frames != 0) {
	draw_surface_centered(frame.surface);
	LOGV("drawing frame #%d min_cap=%d time=%d\n", anim->cur_frame, frame.min_level,
	frame.disp_time);
	}
	draw_clock(anim);
	draw_percent(anim);
	}

	void HealthdDraw::draw_unknown(GRSurface* surf_unknown) {
	int y;
	if (surf_unknown) {
	draw_surface_centered(surf_unknown);
	} else if (sys_font) {
	gr_color(0xa4, 0xc6, 0x39, 255);
	y = draw_text(sys_font, -1, -1, "Charging!");
	draw_text(sys_font, -1, y + 25, "?\?/100");
	} else {
	LOGW("Charging, level unknown\n");
	}
	}